taxonID	type	description	language	source
30635100E11936552FABBA80FCAEFAB8.taxon	type_taxon	Type species: Cryptolechia stomota Meyrick, 1910	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	description	(Figs 1, 23, 45)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Pailong Village (30.01 ° N, 95.00 ° E), Linzhi County, 2031 m, 18. VIII. 2018, leg. MJ Qi, slide No. ZXJ 19371. Paratypes, Xizang: 1 ♀, same data as holotype, slide No. ZXJ 19604; 12 ♂ 4 ♀, Tongmai Town, Bomi County, 2029 m, 12 – 16. VIII. 2018, leg. MJ Qi, slide Nos. ZXJ 18362 ♂, ZXJ 18370 ♂; 1 ♂, Yigong Town, Bomi County, 2230 – 2247 m, 4 – 5. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 19374; 2 ♂ 1 ♀, Motuo, 2059 m, 8. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 19375 ♂; 1 ♂, Fangkongdong, Beibeng Town, Motuo County, 750 m, 1. VIII. 2018, leg. MJ Qi, slide No. ZXJ 19388; Sichuan: 1 ♂, Hailuogou, Luding, 1695 m, 30. VI. 2016, leg. KJ Teng & XF Yang, slide No. ZXJ 18361; 2 ♂, Fengtongzhai, Baoxing, 1723 m, 28. VII. 2021, leg. S Yu et al., slide No. ZXJ 20017; 1 ♂, Wolong, Wenchuan, 1889 m, 11. VII. 2021, leg. S Yu et al., slide No. ZXJ 20023.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	diagnosis	Diagnosis. The new species is similar to M. meyricki Lvovsky, 2015 in features of the male genitalia. It can be distinguished by the costal part of the valva widened from the base to 2 / 3 its length, the ventral margin of the sacculus evenly arched, and the phallus with a curved band at the distal 1 / 3. In M. meyricki, the costal part of the valva is widened from the base to basal 1 / 3, the ventral margin of the sacculus is concave near the apex, and the phallus lacks a distal band (Lvovsky 2015: 773, fig. 14). The new species is also similar to M. tenuispina sp. nov., and the differences between them can be found in the diagnosis of the latter species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	description	Description. Adult (Fig. 1). Forewing length 4.0 – 5.0 mm. Head yellow, greyish brown on frons, tipped with dark brown on occiput. Labial palpus yellow; first and second segments with dark brown scales on outer surface, second segment dark brown at apex; third segment dark brown medially, approximately 2 / 3 length of second segment. Antenna yellow; scape with scattered dark brown scales; flagellum annulated with dark brown on dorsal surface. Thorax pale yellow; tegula dark brown, pale yellow apically. Legs yellow, with exceptions on ventral surface: coxa of foreleg with sparse black scales, femur and tibia black except tibia yellow apically, tarsus black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, femora of mid- and hindlegs black mixed with yellow scales, tibia of midleg black except yellow at middle and at apex, tibia of hindleg black distally, tarsus of midleg black except yellow at apices of basal two and apical one tarsomeres, tarsus of hindleg with basal four tarsomeres black except yellow at apices. Forewing elongate lanceolate, apex narrowly rounded; ground colour pale yellow, with scattered dark brown scales; costal margin with dense dark brown scales along basal 2 / 5, forming a diffused stripe, wider at base, with a small dot at distal 1 / 4 of costal margin; costal spot dark brown, situated at middle of costal margin, diffuse posteriorly; apical patch large, dark brown; tornal spot dark brown, extending to apical patch; plical spot dark brown, at middle of fold; discal and discocellular spots black, at middle and outer margin of cell, discocellular spots placed one above the other; fringe greyish black, yellow along basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 23). Uncus slender, elongate clavate, pointed at apex. Gnathos weakly sclerotized laterally, just exceeding posterior margin of tegumen, inconspicuous anteriorly. Tegumen widened medially, with a large semicircular anterior emargination, laterally narrowed to obtuse anterior end. Costal part of valva narrow at base, gradually widened to 2 / 3 its length, thereafter narrowed to rounded apex, setose ventrodistally; ventral margin arched outward distally; costal band extending nearly to tip of costal margin; transtilla wide, rounded at apex. Sacculus wide at base, gradually narrowed to preapex, with a tiny tooth at apex, base approximately 1.5 times as wide as base of costal part; dorsal margin with two sclerotized bands: basal band from base curved downward, reaching 1 / 3 width of sacculus, distal band along distal 3 / 5 of dorsal margin; ventral margin evenly arched outward. Saccus gradually narrowed from base to rounded apex, approximately 0.5 length of uncus. Juxta circular, with a gap posteriorly. Phallus shorter than costal part of valva, with a curved band at distal 1 / 3. Female genitalia (Fig. 45). Papillae anales sub-quadrate, setose. Apophyses posteriores approximately 2.5 times as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin concave at middle, lined with long setae, slightly convex on anterior margin. Ductus bursae membranous. Corpus bursae membranous, not clearly distinguished from ductus bursae, drop-shaped anteriorly; signum absent.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	distribution	Distribution. China (Sichuan, Xizang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11936502FABB984FF6BFAE0.taxon	etymology	Etymology. The specific epithet is derived from the Latin acutidens, referring to the tiny apical tooth of the sacculus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	description	(Figs 2, 24)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	materials_examined	Type material. CHINA, Guizhou: Holotype ♂, Banzhai Village (25.23 ° N, 108.03 ° E), Maolan, 530 m, 13. VIII. 2018, leg. ML Zheng et al., slide No. ZXJ 18364.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	diagnosis	Diagnosis. The new species is similar to M. longiprocessa Wang & Zhu, 2020 in features of the male genitalia. It can be distinguished by the costal part of the valva slightly widened from the base to 2 / 3 its length, with a mushroom-shaped process near the base on the ventral margin, and the phallus with a long, curved, uniformly thick process from the base to the apex. In M. longiprocessa, the costal part of the valva is widened from the base to 1 / 2 its length and has a hooked process near the base on the ventral margin, and the phallus has a long, curved process that is narrowed from the base to the apex (Wang & Zhu 2020: 337, fig. 22).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	description	Description. Adult (Fig. 2). Forewing length 4.5 mm. Head with yellow scales, greyish brown on vertex, tipped with dark brown on occiput. Labial palpus yellow; first and second segments with dense, dark brown scales on outer surface; second segment with dark brown scales in distal 1 / 2 on inner surface and dark brown at apex; third segment with dense, dark brown scales, except yellow at base and at apex, approximately 2 / 3 length of second segment. Antenna yellow; scape dark brown on dorsal surface; flagellum annulated with dark brown on dorsal surface. Thorax yellow, dark brown basally; tegula dark brown, yellow distally. Legs yellow, with exceptions on ventral surface: coxa of foreleg with scattered black scales, femur black mixed with yellow scales, femora of mid- and hindlegs with scattered black scales, tarsus of foreleg black except yellow at apices of basal two tarsomeres, tarsi of mid- and hindlegs black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, all tibiae black except yellow at middle and at apex. Forewing with costal margin arched, apex pointed; ground colour yellow, with scattered black scales; costal margin with dense black scales, forming a diffused stripe along basal 1 / 3, denser at base, with a small dot before apex of costal margin, composed of several black scales; costal spot black, diffuse posteriorly; apical patch black; plical spot black, at middle of fold; discal and discocellular spots black, discocellular spots placed one above the other, spot at posterior angle extending to tornal spot; tornal spot black, triangular; fringe black, with a yellow basal line. Hindwing and fringe brown. Abdomen. Male genitalia (Fig. 24). Uncus wide at base, narrowed to 2 / 3 its length; distal 1 / 3 straight, slender, pointed at apex. Tegumen narrowed medially, laterally wide and uniform, banded, obtuse on anterior end. Costal part of valva slightly widened from base to 2 / 3 its length, thereafter narrowed to rounded apex, with dense setae ventrodistally; ventral margin straight before basal 2 / 3, gently convex at basal 2 / 3, with a mushroom-shaped process near base, widened apically; costa concave medially; transtilla short, triangular, narrowed to pointed apex. Sacculus wide at base, slightly narrowed to apex, distal 2 / 5 strongly sclerotized, densely setose, serrate dorsoapically, rounded apically. Saccus wide at base, narrowed to middle, parallel-sided from middle to before rounded apex, as long as uncus. Juxta slender, U-shaped. Phallus slightly longer than costal part of valva, tubular from base to beyond middle, band-like from beyond middle to apex, with a long, curved, uniformly thick process arising from beyond middle and exceeding apex of phallus apically. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	distribution	Distribution. China (Guizhou).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36522FABBBE8FE07FE40.taxon	etymology	Etymology. The specific epithet is derived from the Latin aequabilis (uniform), referring to the uniformly thick process of the phallus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	description	(Figs 3, 25, 46)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Motuo Road, Motuo County, 2076 m, 8. VII. 2018, leg. MJ Qi, slide No. ZXJ 19376. Paratype, Xizang: 1 ♀, same data as holotype, except 28. VII. 2018, slide No. ZXJ 19630.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	diagnosis	Diagnosis. The new species is similar to M. dorsolobulata Wang, 2016 in the male genitalia. It can be distinguished by the costal part of the valva widened from the base to 1 / 2 its length, the sacculus with a horn-shaped process on the dorsal margin, and the phallus approximately 1.5 times the length of the costal part of the valva. In M. dorsolobulata, the costal part of the valva is uniformly wide from the base to approximately 3 / 4 its length, the sacculus has a lobate process on the dorsal margin, and the phallus is shorter than the costal part of the valva (Yin & Wang 2016: 136, fig. 7). Meleonoma angularis sp. nov. is also similar to M. seorsispina sp. nov., and the differences between them can be found in the diagnosis of the latter species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	description	Description. Adult (Fig. 3). Forewing length 4.5 – 5.5 mm. Head with yellow scales tipped with black on vertex. Labial palpus yellow; first and second segments with black scales on outer surface, denser in distal 2 / 3 of second segment, and black at apex; third segment with a black spot at middle dorsally, 2 / 3 length of second segment. Antenna yellow; scape with scattered black scales dorsally; flagellum annulated with dark brown on dorsal surface. Thorax yellow, black basally; tegula black, yellow distally. Legs yellow, with exceptions on ventral surface: coxa of foreleg with scattered black scales, femur black, femur of midleg with sparse black scales, tibia of foreleg black, tibia of midleg black except yellow at middle and at apex, tibia of hindleg with scattered black scales distally, tarsus of foreleg black at middle of basal tarsomere and at apical three tarsomeres, tarsus of midleg black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsus of hindleg with sparse black scales. Forewing with costal margin slightly arched, apex rounded; ground colour yellow, mixed with black scales, with a black stripe along basal 2 / 5 of costal margin, wider at base; costal spot black, semicircular, situated at beyond middle; apical patch black, extending from distal part of costal margin along termen to tornal spot; plical spot small, black, at middle of fold; discal and discocellular spots black, at middle and at outer margin of cell respectively, discocellular spots placed one above the other, spot at posterior angle touching with tornal spot; fringe black. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 25). Uncus slender, pointed at apex. Tegumen slightly widened medially, laterally uniform in width, rounded at anterior end. Costal part of valva narrow at base, widened to middle, then slightly narrowed to rounded apex, upturned, setose ventrodistally; ventral margin produced medially; costa concave distally; transtilla short, rounded at apex. Sacculus sub-triangular, wide at base, gradually narrowed to pointed apex, base as long as maximum width of costal part; dorsal margin with a horn-shaped process arising from near base. Saccus triangular, wide at base, gradually narrowed to narrowly rounded apex, as long as uncus. Juxta slender, Vshaped. Phallus approximately 1.5 times length of costal part of valva, tubular, densely verrucous from basal 2 / 3 to before apex; cornutus stout, approximately 4 / 5 length of phallus. Female genitalia (Fig. 46). Papillae anales sub-rectangular, setose. Apophyses posteriores approximately twice as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin notched at middle, lined with long setae. Lamella antevaginalis sub-rectangular. Ductus bursae membranous, with fine rumples anteriorly; ductus seminalis arising from ductus bursae near entrance of corpus bursae. Corpus bursae shorter than ductus bursae, ovate; signum quadrangular, with a small basal spine and larger apical spine.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	distribution	Distribution. China (Xizang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11E36532FABBDDCFD77FD68.taxon	etymology	Etymology. The specific epithet is derived from the Latin angularis (having angles), referring to the horn-shaped process on the dorsal margin of the sacculus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	description	(Figs 4, 26, 47)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Qinlangdang (27.69 ° N, 98.27 ° E), Mt. Gaoligong, 380 m, 28. V. 2017, leg. KJ Teng et al., slide No. ZXJ 19606. Paratypes, Yunnan: 1 ♂ 1 ♀, same data as holotype, slide No. ZXJ 19607 ♀; 2 ♂, same data as holotype, except 30. V. 2017, slide No. ZXJ 19608; 1 ♂, 19. VIII. 2014, 2 ♂, 2. IX. 2014, Taiyang River, 1450 m, leg. ZG Zhang, slide No. ZXJ 19611.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	diagnosis	Diagnosis. The new species is similar to M. auriculata sp. nov. in the shape of the costal part of the valva in the male genitalia. It can be distinguished by the sacculus not bilobed, the saccus as long as the uncus, and the phallus without a curved process. In M. auriculata, the sacculus is bilobed apically, the saccus is 1.5 times the length of the uncus, and the phallus has a curved process.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	description	Description. Adult (Fig. 4). Forewing length 5.0 mm. Head with yellowish white scales tipped with black laterally on occiput. Labial palpus yellow; second segment with scattered black scales, denser on outer surface, and black at apex; third segment black in distal 1 / 2 except yellow at apex, approximately 2 / 3 length of second segment. Antenna yellow; scape black at base of dorsal surface; flagellum alternated with black on dorsal surface. Thorax and tegula black. Legs yellow, with exceptions on ventral surface: coxa of foreleg with sparse black scales, femora of fore- and midlegs black mixed with yellow scales, femur of hindleg black, tibia of foreleg black, tibiae of mid- and hindlegs black except yellow at middle and at apex, tarsus of foreleg black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsus of midleg black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal three black, yellow at apices. Forewing with costal margin arched, apex narrowly rounded; ground colour yellow, with scattered black scales; costal margin with dense black scales along basal 2 / 5, forming a wide stripe, attenuate from base to 2 / 5 length of costal margin; costal spot black, large, diffuse posteriorly; apical patch black, large; tornal spot black, diffused to apical patch along termen; plical spot small, placed at distal 1 / 3 of fold; discal and discocellular spots black, discal spot small, composed of a few scales, discocellular spots larger, one above the other, spot at anterior angle of cell confluent with costal spot, spot at posterior angle confluent with tornal spot; fringe black, with a yellow basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 26). Uncus elongate lanceolate, setose. Tegumen arched, narrow, almost uniformly banded, sclerotized on inner margin. Costal part of valva narrow at base, widened to middle, distal half parallel to apex, setose distally, apex obtuse, with a short ventroapical spine; costal band widened from base to 2 / 3 its length then narrowed to tip of costal margin; transtilla slender, narrowed toward middle, pointed at apex. Sacculus subtriangular, widest at base, narrowed distally, distal 2 / 5 somewhat digitate, rounded at apex. Saccus wide at base, narrowed to rounded apex, approximately as long as uncus. Juxta U-shaped. Phallus shorter than costal part of valva, tubular, bent medially. Female genitalia (Fig. 47). Papillae anales narrowed posteriorly, setose. Apophyses posteriores approximately twice as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin notched at middle, lined with long setae, distinctly produced medially on anterior margin. Lamella antevaginalis rectangular, slightly concave medially on anterior margin. Ductus bursae membranous, widened anteriorly, with fine wrinkles, with a dentate sclerite anteriorly; ductus seminalis arising from ductus bursae near entrance of corpus bursae. Corpus bursae shorter than ductus bursae, rounded; signum large, dentate.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11F365C2FABBEC0FD2CFC6C.taxon	etymology	Etymology. The specific epithet is derived from the Latin apiculus (small point), referring to the short ventroapical spine of the costal part of the valva.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	description	(Figs 5, 27)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Qinlangdang (27.69 ° N, 98.27 ° E), Mt. Gaoligong, 380 m, 28. V. 2017, leg. KJ Teng et al., slide No. ZXJ 19605. Paratypes, Yunnan: 8 ♂, same data as holotype, slide No. ZXJ 18353; 5 ♂, same data as holotype, except 29. V – 1. VI. 2017.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	diagnosis	Diagnosis. The new species is similar to M. triangula Wang, 2016 in the costal part of the valva with a wide band on the ventral margin in the male genitalia. It can be distinguished by the costal part of the valva auriculate distally, the sacculus deeply concave in V shape apically, and the phallus with a slender, curved distal process. In M. triangula, the costal part of the valva is triangular distally, the sacculus is not concave apically, and the phallus lacks a slender, curved process (Yin & Wang 2016: 135, fig. 6). It is also similar to M. apicula sp. nov., and the differences between them can be found in the diagnosis of the preceding species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	description	Description. Adult (Fig. 5). Forewing length 4.5 mm. Head with yellow scales, frons yellowish white, vertex dark grey. Labial palpus yellowish white; first segment black on outer surface; second segment with scattered black scales in distal 2 / 3, forming a black ring at apex; third segment black except yellowish white at base and at apex, 2 / 3 as long as second segment. Antenna yellow; scape with scattered black scales on dorsal surface; flagellum annulated with black on dorsal surface. Thorax yellow mixed with black scales; tegula black, yellow apically. Legs yellow, with exceptions on ventral surface: coxa of foreleg with scattered black scales, femora of fore- and midlegs black mixed with yellow scales, femur of hindleg with scattered black scales, tarsus of foreleg dark brown except yellow at base of basal tarsomere and at apices of basal two and apical one tarsomeres, tarsus of midleg black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres black except yellow at apices, all tibiae black except yellow at middle and at apex. Forewing elongate lanceolate, apex narrowly rounded; ground colour yellow, mixed with black scales, with a black stripe on basal 1 / 3 of costal margin, wider at base, with a small dot at distal 1 / 3 of costal margin, composed of a few black scales; costal spot black, semicircular, situated at middle; apical patch black, extending from distal part of costal margin along termen to tornal spot; tornal spot black, narrowly joined with apical patch on termen; plical spot black, situated at middle of fold; discal and discocellular spots black, at middle and at outer margin of cell respectively, discocellular spots placed one above the other; fringe black. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 27). Uncus with basal 1 / 3 roundly dilated, distal 2 / 3 clavate, narrowly rounded at apex. Tegumen arched, uniformly banded, slightly narrower anterolaterally, sclerotized along inner margin. Costal part of valva uniformly narrow in basal 1 / 3, slightly widened from basal 1 / 3 to middle, thereafter narrowed to rounded apex, densely setose distally, distal 1 / 2 auriculate; ventral margin with basal half heavily sclerotized, forming a wide band; costal band heavily sclerotized, basal 1 / 2 slightly wider than distal 1 / 2, reaching tip of costal margin; transtilla short, blunt at apex. Sacculus heavily sclerotized on dorsal and ventral margins, deeply concave in broad V shape apically, forming two lobes: dorsal lobe shorter, rounded at apex, ventral lobe longer, pointed at apex. Saccus approximately 1.5 times length of uncus, wide at base, gradually narrowed to rounded apex. Juxta slender. Phallus longer than costal part of valva, tubular before middle, distal part produced to a very long, slender, curved process, uniformly narrow except pointed at apex and produced into two short sclerites. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E110365D2FABBFBCFDC6FB4C.taxon	etymology	Etymology. The specific epithet is derived from the Latin auricula (lobe of the ear or small ear) referring to the distally ear-like costal part of the valva.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	description	(Figs 6, 28)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	materials_examined	Type material. CHINA, Sichuan: Holotype ♂, Hailuogou (29.60 ° N, 102.10 ° E), Luding, 1695 m, 1. VII. 2016, leg. KJ Teng & XF Yang, slide No. ZXJ 18356.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	diagnosis	Diagnosis. The new species is similar to M. tianmushana Wang & Zhu, 2020 in the male genitalia. It can be distinguished by the costal part of the valva with a rounded ventroapical process and without a process near the base, and the dorsal lobe of the sacculus longer than the ventral lobe. In M. tianmushana, the costal part of the valva lacks a ventroapical process and has a papillary process near the base, and the dorsal lobe of the sacculus is as long as the ventral lobe (Wang & Zhu 2020: 339, fig. 25). It is also similar to M. heteroidea sp. nov., and the differences between them can be found in the diagnosis of the latter species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	description	Description. Adult (Fig. 6). Forewing length 5.0 mm. Head with yellowish white scales. Labial palpus yellowish white; second segment with a dark brown line from middle to apex on ventral surface, dark brown at apex; third segment with sparse dark brown scales, 2 / 3 length of second segment. Antenna yellowish white; flagellum annulated with greyish brown on dorsal surface except several basal flagellomeres yellow. Thorax yellowish white; tegula dark brown basally, yellowish white distally. Legs yellow, with exceptions on ventral surface: femur of foreleg with scattered dark grey scales, femur of midleg dark grey apically, tibia of foreleg dark brown, tibia of midleg dark grey except yellow at middle and at apex, tibia of hindleg with scattered dark grey scales distally, tarsus of foreleg dark brown at middle of basal tarsomere and at apical three tarsomeres, tarsus of midleg dark brown at middle of basal tarsomere and at base of second to fourth tarsomeres, tarsus of hindleg with basal three tarsomeres dark grey except yellow at apices. Forewing with costal margin arched, apex rounded; ground colour yellow, costal margin with dense dark brown scales in basal 1 / 3, forming an ill-defined narrow stripe; costal spot dark brown, situated at middle, diffused posteriorly; apical patch dark brown, large; tornal spot dark brown, narrowly diffused to apical patch along termen; plical spot dark brown, at basal 2 / 5 of fold; discal and discocellular spots dark brown, discocellular spots placed one above the other, spot at posterior angle indistinct, touching with tornal spot; fringe greyish black, with a yellowish white basal line interrupted by greyish black scales. Hindwing and fringe greyish black. Abdomen. Male genitalia (Fig. 28). Uncus clubbed, pointed at apex. Tegumen uniformly wide medially, with a broad anterior emargination, laterally narrowed to rounded anterior end. Costal part of valva uniform in basal half, widened from 1 / 2 to obtuse apex, setose, produced upward dorsoapically; ventral margin straight, produced to an ovate process apically; costal band heavily sclerotized, reaching near tip of costal margin, slightly concave distally; transtilla short, narrowly linked at middle. Sacculus sub-rectangular, sclerotized on margins, apex straight in posterior 1 / 2, anterior 1 / 2 concave above ventral angle, forming two lobes: dorsal lobe longer, setose, ventral lobe shorter, approximately 1 / 3 as long as previous process. Saccus broad, as long as uncus, wide at base, slightly narrowed to rounded apex. Juxta slender. Phallus 1.8 times length of costal part of valva, tubular in basal 2 / 5, composed of two irregular belts in distal 3 / 5: dorsal band narrowed and slender distally, ventral band dilated and arched apically. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	distribution	Distribution. China (Sichuan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E111365E2FABB8DCFDF3FA08.taxon	etymology	Etymology. The specific epithet is derived from the Latin balteus (belt) and formis (shape), referring to the irregular belts in distal 3 / 5 of the phallus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E112365E2FABB920FB4EFD96.taxon	description	(Figs 7, 29, 48)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E112365E2FABB920FB4EFD96.taxon	materials_examined	Material examined. Yunnan: 12 ♂ 2 ♀, Yexianggu, Xishuangbanna, 762 m, 18 – 22. VII. 2019, leg. KJ Teng et al.; 5 ♂ 2 ♀, Bubeng, Mengla County, 680 m, 24 – 25. VII. 2019, leg. KJ Teng et al., slide Nos. ZXJ 19380 ♂, ZXJ 19631 ♂, ZXJ 19632 ♀; 1 ♂ 1 ♀, Mt. Ji'nuo, Jinghong City, 1003 m, 28 – 29. VII. 2019, leg. KJ Teng et al.; 2 ♂, Damanlu Village, Menghai County, 1128 m, 1 – 2. VIII. 2019, leg. KJ Teng et al. Adult (Fig. 7). Forewing length 3.5 – 5.0 mm.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E112365E2FABB920FB4EFD96.taxon	diagnosis	Diagnosis. The species is similar to M. malacognatha Li & Wang, 2002 in features of the male genitalia. It can be distinguished by the yellow ground color of the forewing (Fig. 7), the sacculus bilobed apically and the phallus with a cornutus (Fig. 29). In M. malacognatha, the ground color of the forewing is yellowish brown, the sacculus is not bilobed apically, and the phallus lacks a cornutus (Li & Wang 2002: 232, fig. 3). Female genitalia (Fig. 48). Papillae anales sub-quadrate, setose. Apophyses posteriores approximately 1.5 times as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin deeply concave at middle, lined with long setae, anterior margin straight. Lamella antevaginalis sub-trapezoidal, broadly concave on posterior margin, deeply concave medially on anterior margin. Antrum sub-rectangular. Ductus bursae long, membranous, uniform in width except slightly narrower anteriorly; ductus seminalis arising from ductus bursae near entrance of corpus bursae. Corpus bursae shorter than ductus bursae, ovate; signum ovate, with small and large spines, apical spine largest.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E112365E2FABB920FB4EFD96.taxon	distribution	Distribution. China (Yunnan), Thailand. Note. The species is newly recorded from China and its female is described for the first time.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	description	(Figs 8, 30)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Qinlangdang (27.69 ° N, 98.27 ° E), Mt. Gaoligong, Nujiang, 380 m, 28. V. 2017, leg. KJ Teng et al., slide No. ZXJ 19360. Paratype, Yunnan: 1 ♂, same data as holotype, except 31. V. 2017.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	diagnosis	Diagnosis. The new species is similar to M. echinata Li, 2004 in the male genitalia by the costa with a very large process. It can be distinguished by the sub-lanceolate uncus, the long costal process reaching beyond the tip of the costal margin of the valva, and the sub-rectangular sacculus. In M. echinata, the uncus is clavate, the costa has a short process reaching before the tip of the costal margin of the valva, and the sacculus is triangular (Li & Wang 2004: 38, fig. 8).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	description	Description. Adult (Fig. 8). Forewing length 5.0 – 5.5 mm. Head with yellow scales (worn). Labial palpus yellow; second segment with scattered black scales on outer surface, denser in distal 1 / 2, black at apex; third segment with scattered black scales from middle to before apex. Antenna yellow; flagellum annulated with black on dorsal surface. Thorax and tegula black basally, yellow distally. Legs yellow, with exceptions on ventral surface: coxa of foreleg with scattered black scales, tibia black except yellow at middle and at apex, tibiae of mid- and hindlegs with scattered black scales, tarsus of foreleg black except yellow at apices of basal two and apical one tarsomeres, tarsus of midleg with basal four tarsomeres black except yellow at base of basal tarsomere and at apices, tarsus of hindleg with scattered black scales on basal three tarsomeres, all femora with scattered black scales. Forewing narrowly lanceolate, apex narrowly rounded; ground colour yellow, with scattered black scales forming a black stripe extending along basal 1 / 3 of costal margin; costal spot black, triangular; apical patch black, extending from distal 1 / 5 of costal margin along termen to before tornus; tornal spot black (worn), sub-triangular; fold with scattered black scales medially; cell with black spot beyond middle and at outer margin respectively; fringe dark brown, with a yellow basal line. Hindwing and fringe grey. Abdomen. Male genitalia (Fig. 30). Uncus sub-lanceolate. Tegumen arched, uniformly banded except narrowly rounded at anterior end laterally. Costal part of valva slightly narrowed from near base to 1 / 6 its length, then widened to 2 / 5 its length, thereafter narrowed to rounded apex, setose; ventral margin folded dorsad from base, forming a triangular plate before 2 / 5; costa with a long clavate process arising from middle extending obliquely outward, parallel with costa, far beyond tip of costal margin, narrowed to acute apex; transtilla short, blunt at apex. Sacculus sub-rectangular, slightly narrower distally, weakly produced dorsoapically. Saccus sub-quadrate, obtusely rounded on anterior margin. Juxta U-shaped; lateral lobe curved distally. Phallus slightly longer than costal part of valva, tubular with a slender, clavate process distally; cornuti consisting of clustered small spines. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11236582FABBEA6FEB5FB04.taxon	etymology	Etymology. The specific epithet is a combination of Latin cost - and clavatus, referring to the clavate process of the costa.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	description	(Figs 9, 31, 49)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Xishuangbanna Tropical Botanical Garden, 531 m, 19. VIII. 2010, leg. YH Sun & LX Li, slide No. YAH 15571. Paratypes, Yunnan: 3 ♀, same data as holotype, slide Nos. ZXJ 19612, DZH 10123.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	diagnosis	Diagnosis. The new species is similar to M. fasciculifera (Wang, 2004) in features of the male genitalia. It can be distinguished by the costal part of the valva with distal 2 / 3 uniformly wide except slightly narrower apex, and the dorsal margin of the sacculus produced to a digitate apical process directed dorsad in the male genitalia; and the corpus bursae without a signum in the female genitalia. In M. fasciculifera, the costal part of the valva is narrowed from distal 2 / 3 to apex and the dorsal margin of the sacculus has a hooked apical process; and the corpus bursae has two signa (Wang 2004: 229, figs 9, 20).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	description	Description. Adult (Fig. 9). Forewing length 3.5 – 4.5 mm. Head with frons covered with yellow tipped with dark brown scales, vertex with dark brown scales, yellow laterally, occiput yellow, dark brown medially. Labial palpus yellow; first and second segments with dense dark brown scales on outer surface, with sparse dark brown scales on inner surface; second segment dark brown at apex; third segment with dense dark brown scales except yellow at base and at apex, approximately 2 / 3 length of second segment. Antenna yellow; scape with scattered dark brown scales; flagellum ringed with dark brown. Thorax yellow, dark brown at base and at midline; tegula dark brown, yellow apically. Legs yellow, with exceptions on ventral surface: coxa of foreleg with sparse dark brown scales, tarsi of fore- and midlegs dark brown except yellow at base of basal tarsomere and at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres dark brown except yellow at apices, all femora with scattered dark brown scales, all tibiae dark brown except yellow at middle and at apex. Forewing with costal margin arched, apex rounded; ground colour yellow, with scattered dark brown scales; costal margin with dense dark brown scales along basal 1 / 3, forming an ill-defined stripe, widened downwards at base and before basal 1 / 3, forming a smaller spot at base and a larger spot at around basal 1 / 3 respectively, with a small dark brown dot at distal 1 / 4 of costal margin, composed of a few scales; costal spot dark brown, diffused posteriorly; apical patch dark brown; tornal spot dark brown, equal with apical patch; plical spot dark brown, at distal 2 / 5 of fold; cell covered with dark brown scales, forming a stripe extending from near base on anterior margin to before apex on posterior margin, a dark brown spot placed before outer margin of cell, discal and discocellular spots dark brown, discocellular spots placed one above the other, spot at anterior angle of cell touching with costal spot, spot at posterior angle touching with tornal spot; dorsum with scattered dark brown scales from base to before end of fold, forming a long stripe; fringe greyish black, yellowish white along basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 31). Uncus with basal 3 / 5 wider, distal 2 / 5 narrower. Tegumen narrowly banded, arched in U shape, rounded at anterior end laterally. Costal part of valva widened from base to basal 1 / 3, distal 2 / 3 uniformly wide except slightly narrower at rounded apex, setose ventrodistally; costa straight; transtilla absent. Sacculus parallel from base to 1 / 2, distinctly narrowed from 1 / 2 to narrowly rounded apex, with a large digitate dorsoapical process. Saccus broad triangular, rounded at apex, nearly same length as uncus. Juxta narrowly linked basally, lateral lobe wide, pointed at apex. Phallus nearly as long as costal part of valva, basal 1 / 4 tubular, then tapered to beyond middle, distal 2 / 5 being a curved band; cornuti being numberous of small spines in vesica. Female genitalia (Fig. 49). Papillae anales sub-quadrate, setose. Apophyses posteriores approximately 1.5 times as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin notched at middle, lined with long setae. Antrum rectangular, widened posteriorly, slightly concave medially on posterior margin, rectangularly produced laterally. Ductus bursae membranous. Corpus bursae distinctly longer than ductus bursae, pyriform; ductus seminalis arising from posterior part of corpus bursae; signum absent.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11436592FABB824FF65FAB8.taxon	etymology	Etymology. The specific epithet is derived from the Latin crispus (curly, curved), referring to the curved phallus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	description	(Figs 10, 32)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	materials_examined	Type material. CHINA, Sichuan: Holotype ♂, Bifengxia (30.07 ° N, 102.97 ° E), Ya'an, 1115 m, 28. VI. 2016, leg. KJ Teng & XF Yang, slide No. ZXJ 18358. Paratype, Sichuan: 1 ♂, same data as holotype.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	diagnosis	Diagnosis. The new species is similar to M. balteiformis sp. nov. in features of the male genitalia. It can be distinguished by the uncus slightly dilated apically, the costal part of the valva with a slender ventroapical process, and the dorsal lobe of the sacculus shorter than the ventral lobe. In M. balteiformis, the uncus is pointed at apex, the costal part of the valva has a rounded ventroapical process, and the dorsal lobe of the sacculus is longer than the ventral lobe.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	description	Description. Adult (Fig. 10). Forewing length 4.0 – 4.5 mm. Head with yellow scales, dark grey on vertex. Labial palpus yellow; second segment with scattered black scales in distal 1 / 2, forming a black annulation at apex; third segment shorter than second segment, with a black spot medially. Antenna yellow; scape mixed with black scales; flagellum annulated with black on dorsal surface except several basal flagellomeres yellow. Thorax yellow; tegula black basally, yellow distally. Legs yellow, with exceptions on ventral surface: tibia of foreleg dark brown, tibia of midleg dark brown except yellow at middle and at apex, tibia of hindleg with scattered dark brown scales, tarsus of foreleg dark brown except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsus of midleg dark brown except yellow at base of basal tarsomere and at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres dark brown except yellow at apices, all femora with scattered dark brown scales. Forewing parallel from base to basal 3 / 4, then slightly narrowed to narrowly rounded apex; ground colour yellow, mottled with black scales, with an ill-defined stripe along basal 1 / 3 of costal margin, wider at base; costal spot black, slightly beyond middle; apical patch black, large; tornal spot smaller, black; plical spot small, at middle of fold; discal and discocellular spots black, discocellular spots placed one above the other, spot at posterior angle touching with tornal spot; fringe black. Hindwing and fringe dark brown. Abdomen. Male genitalia (Fig. 32). Uncus straight, narrowed from wider base to middle, distal 1 / 2 clubbed, roundly dilated at apex. Tegumen banded, arched in U shape, slightly produced posterolaterally, rounded anterolaterally. Costal part of valva in sea horse shape, parallel sided from base to basal 1 / 3, narrowed between basal 1 / 3 and 1 / 2, widened from middle to basal 2 / 3 and quadrate from basal 2 / 3 to apex, with dense setae distally; apex with a small dorsal spine, below it set a tiny process, concave above ventral angle, forming a slender ventral process; ventral margin heavily sclerotized, distinctly concave beyond middle; costa sinuate, slightly concave medially, straight distally; transtilla short, rounded at apex. Sacculus sub-quadrate, sclerotized on margins; dorsal margin with a sub-ovate sclerite basally, distally produced triangularly; apex with two apex-rounded lobes: dorsal lobe shorter and narrower, ventral lobe longer and wider. Saccus approximately twice as long as uncus, wide at base, slightly narrowed to rounded apex. Juxta U-shaped. Phallus 1.5 times as long as costal part of valva, basal 1 / 2 tubular, distal 1 / 2 irregularly banded, splitting apart, forming four short distal bands. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	distribution	Distribution. China (Sichuan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E115365A2FABB985FC61F974.taxon	etymology	Etymology. The specific epithet is derived from the Greek heteros (different) and - oides (suffix denoting likeness), referring to the two differently shaped apical lobes of the sacculus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	description	(Figs 11, 33)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Yadong Village (29.33 ° N, 95.34 ° E), Motuo County, 833 m, 16. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 19601.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	diagnosis	Diagnosis. The new species has male genitalia most similar to those of M. meyricki Lvovsky, 2015. It can be distinguished by the costal part of the valva produced medially on the ventral margin, the saccus slightly longer than the uncus, and the phallus with a long curved cornutus. In M. meyricki, the ventral margin of the costal part of the valva is produced at basal 1 / 3, the saccus is shorter than the uncus, and the phallus lacks a curved cornutus (Lvovsky 2015: 773, fig. 14).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	description	Description. Adult (Fig. 11). Forewing length 4.0 mm. Head with yellow scales. Labial palpus lost. Antenna yellow; scape black on dorsal surface; flagellum ringed with black on dorsal surface. Thorax with yellow scales, black anteromedially; tegula black, yellow distally. Legs yellow, with exceptions on ventral surface: foreleg black except coxa mixed with yellow scales, tarsus yellow at base of basal tarsomere and at apices of basal two tarsomeres, midleg black except femur mixed with yellow scales, tibia yellow at middle and at apex, tarsus yellow at apices of basal two and apical one tarsomeres, femur and tibia of hindleg with scattered dark grey scales, tarsus lost. Forewing with costal margin slightly arched, apex narrowly rounded; ground colour yellow, with scattered black scales; costal margin with a black stripe along basal 2 / 5, widened basally, with a small dim black dot at distal 1 / 4 of costal margin, composed of a few scales; costal spot black, semicircular, extending to above anterior margin of cell posteriorly, slightly placed beyond middle; apical patch black, large; tornal spot black, diffused to apical patch along termen; plical spot small, black; discal and discocellular spots black, at beyond middle and at outer margin of cell respectively, discocellular spots placed one above the other, spot at posterior angle of cell almost inseparable from tornal spots; fringe black. Hindwing and fringe dark grey. Abdomen. Male genitalia (Fig. 33). Uncus slender, pointed at apex. Tegumen uniformly banded, arched in U shape, obtuse at anterior end laterally. Costal part of valva with basal 1 / 2 parallel, distal 1 / 2 slightly narrowed to rounded apex, curved dorsad distally, setose ventrodistally; ventral margin obtusely produced at middle; costa concave at distal 2 / 5; transtilla slender banded, curved distally. Sacculus triangular, gradually narrowed from base to narrowly rounded apex. Saccus slightly longer than uncus, wide at base, gradually narrowed to rounded apex. Juxta slender, U-shaped. Phallus longer than costal part of valva, tubular, with numerous spinules in vesica; cornutus being a curved band extending from before basal 1 / 4 to beyond apex of phallus. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	distribution	Distribution. China (Xizang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365A2FABBAC9FD8AFE88.taxon	etymology	Etymology. The specific epithet is derived from the Latin licinus (turned upward), referring to the costal part of the valva curved dorsad distally.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	description	(Figs 12, 34)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	materials_examined	Type material. CHINA, Hubei: Holotype ♂, Shuangping (31.57 ° N, 109.87 ° E), Zhuxi County, 1201 m, 5. VII. 2017, leg. WD Qi et al., slide No. ZML 17558.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	diagnosis	Diagnosis. The new species is similar to M. malacognatha Li & Wang, 2002 in features of the male genitalia. It can be distinguished by the lanceolate uncus, the saccus as long as the uncus, and the phallus with two cornuti. In M. malacognatha, the uncus is clavate, the saccus is shorter than the uncus, and the phallus lacks a cornutus (Li & Wang 2002: 232, fig. 3). It is also similar to M. oxydonta sp. nov., and the differences between them can be found in the diagnosis of the latter species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	description	Description. Adult (Fig. 12). Forewing length 5.5 mm. Head with whitish yellow scales (worn). Labial palpus whitish yellow; first segment dark brown on outer surface; second segment with sparse dark brown scales on outer surface, dark brown at apex; third segment approximately 2 / 3 length of second segment. Antenna whitish yellow; flagellum annulated with dark brown on dorsal surface except several basal flagellomeres yellow. Thorax whitish yellow; tegula dark brown, whitish yellow distally. Legs yellowish white, with exceptions on ventral surface: foreleg greyish brown except tarsus yellowish white at base of basal tarsomere and at apices of basal two tarsomeres, tibia of midleg greyish brown, tarsus greyish brown except yellowish white at base of basal tarsomere and apices of basal two tarsomeres and yellowish white at apical one tarsomere, hindleg with scattered greyish brown scales on tibia and tarsus. Forewing with costal margin arched, apex rounded; ground colour whitish yellow, with scattered dark brown scales; costal margin with dark brown scales along basal 1 / 3, forming a diffused stripe; costal spot dark brown, diffused posteriorly to crossing anterior margin of cell; apical patch (worn) dark brown; plical spot black, at middle of cell; discal and discocellular spots black, discocellular spots placed one above the other, spot at anterior angle of cell touching with costal spot; fringe dark brown, yellowish white along basal line. Hindwing and fringe pale greyish brown. Abdomen. Male genitalia (Fig. 34). Uncus lanceolate, acute at apex, triangularly produced near apex laterally. Tegumen arched in broad U shape, slightly wider medially. Costal part of valva large, uniformly wide except narrowed at base, rounded at apex, setose; ventral margin concave at base, forming a 90 ° angle near base; costal band reaching tip of costal margin; transtilla short, blunt at apex. Sacculus relatively small, quadrangular. Saccus triangular, as long as uncus, pointed at apex. Juxta broadly C-shaped. Phallus 3 / 4 length of costal part of valva, tubular; two cornuti different in size: larger one concave apically, forming a shorter dorsal lobe and a longer ventral lobe, with dense small spines; smaller one spine-shaped. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	distribution	Distribution. China (Hubei).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E116365B2FABBD95FCBEFCB0.taxon	etymology	Etymology. The specific epithet is derived from the Latin magnus (large) and the suffix - icus (denoting a state or condition), referring to the large costal part of the valva.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	description	(Figs 13, 35)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Beibeng Town (29.24 ° N, 95.17 ° E), Motuo County, 987 m, 12. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 19373. Paratypes, Xizang: 2 ♂, same data as holotype; 4 ♂, same data as holotype, except 13 – 15. VIII. 2017.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	diagnosis	Diagnosis. The new species is similar to M. ventrospinosa Wang & Zhu, 2020 in features of the male genitalia. It can be distinguished by the costal part of the valva widened from base to middle and without an apical spine on the ventral margin, and the sacculus lacking an apical process. In M. ventrospinosa, the costal part of the valva is uniformly wide from base to 3 / 5 its length and has a spine at the apex on the ventral margin, and the apex of the sacculus has a process (Wang & Zhu 2020: 342, fig. 27).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	description	Description. Adult (Fig. 13). Forewing length 4.5 – 5.0 mm. Head with pale yellow scales. Labial palpus pale yellow; second segment black at apex; third segment slightly shorter than second segment. Antenna pale yellow; flagellum alternated with brown on dorsal surface except several basal tarsomeres pale yellow. Thorax pale yellow; tegula pale yellow, mixed with black scales basally. Legs pale yellow, with exceptions on ventral surface: coxa of foreleg with sparse black scales, tibia black, tibiae of mid- and hindlegs black distally, tarsus of foreleg black at middle of basal tarsomere and at apical three tarsomeres, tarsus of midleg with basal four tarsomeres black except yellow at apices, tarsus of hindleg with sparse black scales on basal tarsomere, all femora with scattered black scales. Forewing with costal margin arched, apex narrowly rounded; ground colour pale yellow, with scattered black scales; costal margin black along basal 1 / 3, forming a stripe, unequal in width; costal spot large, inverted triangular; apical patch black, semicircular, running from distal part of costal margin along termen to before tornus; tornal spot black; plical spot black, indistinct, at middle of fold; fringe dark brown, interrupted by yellowish brown. Hindwing and fringe dark grey. Abdomen. Male genitalia (Fig. 35). Uncus clubbed, wide at base, slightly narrowed to 2 / 5 its length, distal 3 / 5 uniformly narrow except slightly dilated apex. Tegumen arched in broad U shape, sclerotized on outer margin. Costal part of valva narrow at base, slightly widened to middle, thereafter turned upward and narrowed to rounded apex, setose; ventral margin heavily sclerotized, with a row of tiny spines ranging from near base to before middle, obtusely angled at middle; costa broadly and shallowly concave medially, costal band with sparse short setae; transtilla heavily sclerotized, curved upward distally. Sacculus sub-triangular, wide at base, gradually narrowed to rounded apex, with a carina extending from middle of ventral margin to before preapex of dorsal margin. Saccus approximately 1.5 times length of uncus, wide at base, gradually narrowed to rounded apex. Juxta slender. Phallus longer than twice length of costal part of valva, tubular in basal 2 / 5, narrowed from middle to apex, forming a dorsal bar; irregular belt from below dorsal bar curved upward distally, reaching beyond apex of phallus, with spine basolaterally. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	distribution	Distribution. China (Xizang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E11736442FABBF8DFC67FB04.taxon	etymology	Etymology. The specific epithet is derived from the Greek mikros (small) and the Latin dens (tooth), referring to the row of tiny spines on the ventral margin of the costal part of the valva.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836442FABB819FD7BFD5E.taxon	description	(Figs 14, 36)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836442FABB819FD7BFD5E.taxon	materials_examined	Material examined. CHINA, Xizang: 1 ♂ 1 ♀, Shenhu, Jilong Town, Jilong County, 2772 m, 11. VII. 2019, leg. MJ Qi & JQ Deng, slide No. ZXJ 19355 ♂; 1 ♂, Chongse Village, Jilong Town, Jilong County, 2640 m, leg. MJ Qi & JQ Deng, slide No. ZXJ 19336. Adult (Fig. 14). Forewing length 5.0 – 6.0 mm.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836442FABB819FD7BFD5E.taxon	diagnosis	Diagnosis. Meleonoma montana is similar to M. facialis Li & Wang, 2002 in structures of the male genitalia. It can be distinguished by the absence of dark scales on the third segment of the labial palpus (Fig. 14), and the sacculus with a lobate upper process (Fig. 36). In M. facialis, the third segment of the labial palps has dark scales, and the sacculus has a rounded upper process (Li & Wang 2002: 230, fig. 1).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836442FABB819FD7BFD5E.taxon	distribution	Distribution. China (Xizang), Nepal. Note. The species is newly recorded from China.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	description	(Figs 15, 37)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	materials_examined	Type material. CHINA, Guizhou: Holotype ♂, Xiannvtang (26.37 ° N, 108.20 ° E), Mt. Leigong, 1553 m, 1. VIII. 2018, leg. ML Zheng et al., slide No. ZXJ 18290. Paratype, Guizhou: 1 ♂, same data as holotype, slide No. ZXJ 19602.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	diagnosis	Diagnosis. The new species is similar to M. magnifica sp. nov. in features of the male genitalia. It can be distinguished by the uncus notched medioapically, the costal part of the valva with an apical spine on the ventral margin, and the phallus with one cornutus. In M. magnifica, the uncus is pointed apically, the costal part of the valva lacks an apical spine, and the phallus has two cornuti.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	description	Description. Adult (Fig. 15). Forewing length 5.0 – 6.0 mm. Head with frons whitish yellow, vertex yellow, tipped with dark brown, occiput yellow tipped with dark brown medially. Labial palpus yellow; second segment with black scales on outer surface, denser in distal 1 / 2, forming a black ring near apex; third segment black from near base to before apex, approximately half length of second segment. Antenna yellow; scape with scattered black scales dorsally; flagellum annulated black except several basal flagellomeres yellow on ventral surface. Thorax yellow mixed with black; tegula black basally, yellow distally. Legs yellow, with exceptions on ventral surface: femur of foreleg black mixed with yellow scales, femora of mid- and hindlegs with sparse black scales, tarsi of fore- and midlegs black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres black except yellow at apices, all tibiae black except yellow at middle and at apex. Forewing with costal margin arched, apex narrowly rounded; ground colour yellow, with scattered black scales; costal margin with dense black scales along basal 2 / 5, forming an ill-defined stripe, gradually widened from base to 2 / 5 its length; costal spot black, large, diffused posteriorly; apical patch black, diffused from distal part of costal margin along termen to connected with tornal spot; tornal spot triangular, connected with costal spot anteriorly; fringe black, with a yellow basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 37). Uncus sub-rectangular, slightly notched medioapically. Tegumen arched, banded, uniform medially, slightly narrowed to pointed anterior end. Costal part of valva elongate, narrow at base, widened from base to basal 1 / 3, distal 2 / 3 rectangular, rounded at apex, setose ventrally; ventral margin concave basally, obtusely produced and angled at basal 1 / 3, with an apical spine; transtilla absent. Sacculus widened to obtuse apex, with a small dorsal lobe near base, densely setose. Saccus slightly longer than uncus, broad, distinctly narrowed to basal 3 / 4, distal 1 / 4 produced to a papillary process. Juxta stout, U-shaped. Phallus slightly longer than costal part of valva, tubular; cornutus clavate, as long as 1 / 3 length of phallus, with tiny teeth apically. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	distribution	Distribution. China (Guizhou).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10836452FABBEDEFD77FB28.taxon	etymology	Etymology. The specific epithet is derived from the Greek oxys (sharp) and the Latin dens (tooth), referring to the ventroapical spine of the costal part of the valva.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936452FABB800FD78FD54.taxon	description	(Figs 16, 38)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936452FABB800FD78FD54.taxon	materials_examined	Material examined. CHINA, Guizhou: 1 ♂, Banzhai Village, Maolan, 530 m, 14. VIII. 2018, leg. ML Zheng et al., slide No. ZXJ 18315. Adult (Fig. 16). Forewing length 4.0 mm.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936452FABB800FD78FD54.taxon	diagnosis	Diagnosis. Meleonoma segregacantha is similar to M. dorsibacilliformis Wang & Zhu, 2020 in features of the male genitalia. It can be distinguished by the small sub-triangular uncus, the absence of a gnathos, and the large sacculus with a long apical spine (Fig. 38). In M. dorsibacilliformis, the uncus is clavate, the gnathos is present, and the sacculus has a digitate apical process (Wang & Zhu 2020: 337, figs 5, 21).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936452FABB800FD78FD54.taxon	distribution	Distribution. China (Guizhou), Thailand. Note. The species is newly recorded from China.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	description	(Figs 17, 39, 50)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Pukawang Village (27.84 ° N, 98.32 ° E), Dulongjiang Town, Gongshan County, Nujiang, 1335 m, 10. VI. 2017, leg. KJ Teng et al., slide No. ZXJ 19378. Paratypes, Yunnan: 2 ♂ 1 ♀, same data as holotype, slide Nos. ZXJ 19620 ♂, ZXJ 19615 ♀; 1 ♂, same data as holotype, except 31. V. 2017, slide No. ZXJ 19621.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	diagnosis	Diagnosis. The new species is similar to M. angularis sp. nov. in features of the male genitalia. It can be distinguished by the ventral margin of the costal part of the valva obtusely produced at basal 2 / 5, and the cornutus approximately 2 / 3 the length of the phallus; and the corpus bursae slightly longer than the ductus bursae in the female genitalia. In M. angularis, the ventral margin of the costal part of the valva is produced medially, the cornutus is approximately 4 / 5 the length of the phallus; and the corpus bursae is shorter than the ductus bursae.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	description	Description. Adult (Fig. 17). Forewing length 5.0 – 5.5 mm. Head with yellow scales, tipped with greyish black on vertex. Labial palpus yellow; second segment with dense black scales on outer surface, black at apex; third segment approximately 2 / 3 length of second segment, with dense black scales in distal 1 / 2 on dorsal surface except yellow at apex. Antenna yellow; flagellum alternated with black on dorsal surface. Thorax and tegula yellow, tegula black basally. Legs yellow, with exceptions on ventral surface: coxa of foreleg with sparse black scales, tibia black, tibia of midleg black except yellow at middle and at apex, tibia of hindleg with scattered black scales distally, tarsus of foreleg black, yellow at base of basal tarsomere and at apices of basal two and apical one tarsomeres, tarsus of midleg black, yellow at base of basal tarsomere and at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal three tarsomeres black except yellow at apices, all femora with scattered black scales. Forewing elongate lanceolate, apex rounded; ground colour yellow, with scattered black scales, forming a rounded black spot at base, followed by an ill-defined stripe along basal 2 / 5 of costal margin; costal spot black, large, semicircular, diffused posteriorly to above anterior margin of cell; apical patch black; tornal spot black, narrowly diffused to apical patch; plical spot indistinct, composed of a few black scales; discal and discocellular spots black, discocellular spots placed one above the other, spot at posterior angle touching with tornal spot; fringe greyish black. Hindwing and fringe grey. Abdomen. Male genitalia (Fig. 39). Uncus slender, pointed at apex. Tegumen arched in broad U shape, almost uniformly wide. Costal part of valva relatively narrow, elongate, basal 2 / 5 parallel, distal 3 / 5 slightly narrowed to rounded apex, upturned, setose ventrodistally; ventral margin produced at basal 2 / 5, forming an obtuse angle; costa concave medially; transtilla short, pointed at apex. Sacculus sub-triangular, wide at base, gradually narrowed to apex, base longer than maximum width of costal part; dorsal margin with a spine-shaped process arising from near base, and with a tiny apical spine. Saccus triangular, wide at base, gradually narrowed to rounded apex, as long as uncus. Juxta slender. Phallus slightly longer than costal part of valva, tubular, densely verrucous before apex; cornutus stout, club-shaped, approximately 2 / 3 length of phallus. Female genitalia (Fig. 50). Papillae anales sub-rectangular, setose. Apophyses posteriores approximately twice as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin concave at middle, lined with long setae, anterior margin convex medially. Lamella antevaginalis sub-rectangular. Ductus bursae membranous, with fine rumples; ductus seminalis arising from ductus bursae near entrance of corpus bursae. Corpus bursae slightly longer than ductus bursae, ovate; signum sub-quadrate, with a smaller posterior spine and a larger anterior spine.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10936472FABBEE9FCFBFBD8.taxon	etymology	Etymology. The specific epithet is derived from the Latin seorsus (apart, separate) and spina, referring to the signum with a smaller posterior spine and a larger anterior spine.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	description	(Figs 18, 40, 51)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Xiajinchang (23.17 ° N, 104.60 ° E), Malipo County, Wenshan, 1470 m, 26. VII. 2016, leg. KJ Teng et al., slide No. ZXJ 19382. Paratype, Yunnan: 1 ♀, same data as holotype, slide No. ZXJ 19609.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	diagnosis	Diagnosis. The new species is similar to M. catenata Wang & Zhu, 2020 in features of the male genitalia. It can be distinguished by the forewing with a distinct costal spot, the saccus as long as the uncus in the male genitalia, and the signum placed at anterior 2 / 5 of the ductus bursae in the female genitalia. In M. catenata, the costal spot is a small dot (Wang & Zhu 2020: 334, fig. 3), the saccus is 1.8 times the length of the uncus (Wang & Zhu 2020: 334, fig. 19), and the signum is placed at anterior end of the corpus bursae (Wang & Zhu 2020: 334, fig. 35).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	description	Description. Adult (Fig. 18). Forewing length 5.0 – 5.5 mm. Head with yellow scales. Labial palpus yellow; second segment with sparse black scales on outer surface, black at apex; third segment with a black dot medially, approximately 2 / 3 length of second segment. Antenna yellow; flagellum alternated with black on dorsal surface. Thorax pale yellow; tegula pale yellow, with dense black scales basally. Legs yellow, with exceptions on ventral surface: femur of foreleg dark brown mixed with yellow scales, femur of midleg with sparse dark brown scales apically, tibia of foreleg black except yellow apically, tibia of midleg black except yellow at middle and at apices, tibia of hindleg with scattered dark brown scales, tarsus of foreleg black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsus of midleg black except yellow at base of basal tarsomere and at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal three tarsomeres dark brown except yellow at apices. Forewing with costal margin arched, apex rounded; ground colour yellow, with scattered black scales; costal margin with black scales in basal 1 / 3, forming an ill-defined stripe; costal spot black, distinct, semioval, diffused posteriorly; apical patch black, large, diffused from distal part of costal margin along termen to tornus; tornal spot black; plical spot black, at middle of fold; discal and discocellular spots black, discocellular spots placed one above the other, spot at posterior angle of cell touching with tornal spot; fringe black, yellow along basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 40). Uncus clavate, evenly slender except slightly wider base and pointed apex. Tegumen arched in broad U shape, uniformly wide. Costal part of valva widened from base to basal 2 / 5, then upturned and narrowed to rounded apex; ventral margin heavily sclerotized in basal 1 / 3, distinctly convex at basal 2 / 5, forming a large, obtusely rounded angle; costa almost straight; transtilla narrowed toward middle, pointed at apex. Sacculus wide at base, slightly narrowed toward apex, with a long lamellar process arising from near base of dorsal margin, parallelly extending outward to pre-apex of sacculus, free distally, hooked and pointed apically. Saccus as long as uncus, slightly narrowed from wide base to narrowly rounded apex. Juxta arched, forming a semicircle. Phallus almost as long as costal part of valva, distal 3 / 5 membranous, with four sclerotized belts, dentate marginally on apical band; cornutus absent. Female genitalia (Fig. 51). Papillae anales narrowed posteriorly, with sparse setae dorsally. Apophyses posteriores twice as long as apophyses anteriores. Eighth tergum sub-rectangular, shallowly concave at middle on posterior margin. Eighth sternal plate spiculate; posterior margin lined with strong setae, deeply and narrowly incised at middle, forming two large triangular plates laterally; anterior margin roundly convex medially. Ductus bursae membranous, enlarged anteriorly. Corpus bursae large, ovate, as long as ductus bursae; a sclerotized catenulate belt from junction of ductus bursae and corpus bursae extending to near posterior 1 / 4 of corpus bursae, forming a circle, with numerous teeth along outer margin; signum sub-ovate, with three denticles, placed at posterior 2 / 5 of corpus bursae.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10B36402FABBF65FDA7FB4C.taxon	etymology	Etymology. The specific epithet is derived from the Latin similis (resembling) and catenata (chained), referring to the similarities of the two species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	description	(Figs 19, 41)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Motuo County (29.32 ° N, 95.32 ° E) Linzhi City, 1097 m, 10. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 19372. Paratypes, Xizang: 1 ♂, same data as holotype; 6 ♂, Fangkongdong, Beibeng Town, Motuo City, 750 m, 1. VIII. 2018, leg. MJ Qi, slide Nos. ZXJ 18333, ZXJ 18336.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	diagnosis	Diagnosis. The new species is similar to M. malacognatha Li & Wang, 2002 in features of the male genitalia. It can be distinguished by the orange forewing with a black spot at base on the dorsum; in the male genitalia by the gnathos not exceeding the anterior margin of the tegumen and the costal part of the valva semielliptical. In M. malacognatha, the yellowish brown forewing lacks a spot at base on the dorsum; the gnathos exceeds the anterior margin of the tegumen and the costal part of the valva is rectangular distally (Li & Wang 2002: 232, fig. 3). It is also similar to M. tenuicaulis sp. nov., and the differences between them can be found in the diagnosis of the latter species.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	description	Description. Adult (Fig. 19). Forewing length 3.0 – 4.0 mm. Head with yellow scales, tipped with black medially on occiput. Labial palpus pale yellow; second segment mixed with sparse scales on outer surface, black apically; third segment slightly shorter than second segment, with dense black scales except pale yellow at base and at apex. Antenna pale yellow; scape mixed with black scales; flagellum with black annulations on dorsal surface. Thorax yellow, black along midline; tegula black basally, yellow distally. Legs yellow, with exceptions on ventral surface: coxa of foreleg with scattered black scales, femur black, femur of midleg with scattered black scales, femur of hindleg with sparse dark grey scales, tibia of foreleg black, tibia of midleg black except yellow apically, tibia of hindleg with scattered black scales, tarsus of foreleg black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tarsus of midleg black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres black except yellow at apices. Forewing with costal margin arched, apex narrowly rounded; ground colour yellow, with scattered black scales; costal margin with a black stripe along basal 1 / 3, wider at base, with a small dot at distal 1 / 4 of costal margin, black; costal spot large, semicircular; apical patch black, large, running from distal part of costal margin along termen to tornus; plical spot black, at middle of fold; discal and discocellular spots black, discal spot large, discocellular spots small, composed of a few scales, placed one above the other, spot at posterior angle touching with tornal spot; tornal spot black, narrowly diffused to apical patch; dorsum with a black spot at base; fringe yellow, greyish black around apex and tornus. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 41). Uncus slender, pointed at apex. Gnathos sclerotized laterally, not exceeding anterior margin of tegumen, invisible anteriorly. Tegumen arched, U-shaped, uniformly wide except slightly narrower at anterior end laterally. Costal part of valva semielliptical, setose ventrodistally; costal band obliquely straight, extending to just before tip of costal margin; ventral margin obtusely arched; transtilla slender, joined medially. Sacculus relatively sub-rectangular, sclerotized on margins, slightly widened to obtusely rounded apex. Saccus triangular, large and broad, shorter than uncus. Juxta sub-rectangular, with a small spine-like process posterolaterally. Phallus slender, half length of costal part of valva, verrucous distally. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	distribution	Distribution. China (Xizang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10C36412FABB8DCFD45FA08.taxon	etymology	Etymology. The specific epithet is derived from the Latin spicula (small point) and the term juxta, referring to the juxta with a spine-like process posterolaterally.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	description	(Figs 20, 42)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	materials_examined	Type material. CHINA, Yunnan: Holotype ♂, Qinlangdang (27.69 ° N, 98.27 ° E), Mt. Gaoligong, Nujiang, 380 m, 28. V. 2017, leg. KJ Teng et al., slide No. ZXJ 19390.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	diagnosis	Diagnosis. The new species is silimar to M. spicijuxta sp. nov. in the shape of the costal part of the valva in the male genitalia. The major differences lie in the sacculus with two apical processes and the elongate U-shaped juxta of the new species. In M. spicijuxta, the apex of the sacculus lacks apical processes, and the sub-rectangular juxta has a small spine-like process posterolaterally.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	description	Description. Adult (Fig. 20). Forewing length 5.0 mm. Head with yellow scales, tipped with dark brown. Labial palpus lost. Antenna yellow; scape with dark brown scales dorsally; flagellum dark brown on dorsal surface except several basal flagellomeres yellow. Thorax (worn) yellow; tegula dark brown, yellow distally. Legs yellow, with exceptions on ventral surface: femur and tibia of foreleg greyish black except tibia yellow apically, tarsus greyish black except yellow at base of basal tarsomere and at apices of basal two tarsomeres, tibia of midleg greyish black distally, tarsus greyish black except yellow at apices of basal two tarsomeres, tibia of hindleg with scattered greyish brown scales, tarsus with basal four tarsomeres greyish brown except yellow at apices. Forewing elongate lanceolate, with costal margin arched, apex narrowly rounded; ground colour yellow, with scattered dark brown and black scales; costal margin with an indistinct spot at base; costal spot dark brown, diffused posteriorly crossing anterior margin of cell; apical patch (worn) dark brown; several equally sized dark brown dots evenly spaced from distal part of costal margin along termen to tornus; discocellular spot black, touching with costal spot; fringe yellow. Hindwing and fringe dark brown. Abdomen. Male genitalia (Fig. 42). Uncus slender, hooked and pointed at apex. Gnathos sclerotized laterally, membranous anteriorly, exceeding anterior margin of tegumen. Tegumen arched, uniform in width, with a semicircular anterior emargination. Costal part of valva semielliptical, setose ventrally; costal band narrow, reaching before tip of costal margin; transtilla slender, clavate. Sacculus large, heavily sclerotized, narrow at base, gradually widened to apex; apex with two processes: dorsoapical process short, sub-triangular; ventroapical process longer and slenderer, spine-shaped distally. Saccus rounded. Juxta developed, elongate U-shaped, lateral arms narrowest at middle. Phallus slender, approximately 2 / 3 length of costal part of valva. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	distribution	Distribution. China (Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10D36422FABBDDDFF65FBFD.taxon	etymology	Etymology. The specific epithet is derived from the Latin tenuis (thin) and caulis (stalk), referring to the slender phallus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	description	(Figs 21, 43)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	materials_examined	Type material. CHINA, Zhejiang: Holotype ♂, Huaxi Village (28.99 ° N, 120.50 ° E), Anwen Town, Pan'an County, Jinhua City, 542 m, 28. VII. 2015, leg. AH Yin et al., slide No. ZXJ 19384.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	diagnosis	Diagnosis. The new species is similar to M. acutidens sp. nov. in features of the male genitalia. It can be distinguished by the sacculus with base approximately twice as wide as the base of the costal part of the valva and with several small spines in distal 1 / 2 on the dorsal margin, and the saccus as long as the uncus. In M. acutidens, the base of the sacculus is approximately 1.5 times as wide as the base of the costal part of the valva and has a tiny tooth at apex on the dorsal margin, and the saccus is half the length of the uncus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	description	Description. Adult (Fig. 21). Forewing length 4.0 mm. Head yellow, frons yellowish grey, occiput tipped with dark brown medially. Labial palpus yellow; first and second segments with dense dark brown scales, second segment dark brown at apex; third segment dark brown medially, approximately 2 / 3 length of second segment. Antenna yellow; scape with scattered dark brown scales; flagellum annulated with dark brown on dorsal surface. Thorax dark brown medially, yellow marginally; tegula dark brown, yellow distally. Legs yellow, with exceptions on ventral surface: coxa of foreleg mixed with dark brown scales, tibiae of fore- and midlegs dark brown except yellow at middle and at apex, tibia of hindleg with scattered dark brown scales distally, tarsus of foreleg dark brown except yellow at base of basal tarsomere and at apices of basal two and apical one tarsomeres, tarsus of midleg with basal four tarsomeres dark brown except yellow at apices, tarsus of hindleg with sparse dark brown scales, all femora mixed with dark brown scales. Forewing with costal margin arched, apex pointed; ground colour yellow, with scattered dark brown and black scales; costal margin with dense dark brown scales, forming an ill-defined stripe along basal 1 / 3, with an indistinct dark brown dot at distal 1 / 5 of costal margin; costal spot black, instinctly diffused posteriorly, denser at both ends; apical patch (worn) dark brown; plical spot black, composed of a few scales, placed at middle of fold; discal and discocellular spots dark brown, discal spot small, placed at beyond middle of cell, discocellular spots larger, placed one above the other; fringe yellowish white, tipped with dark brown. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 43). Uncus slender, gradually narrowed to pointed apex. Gnathos slender, sclerotized laterally, separated and invisiable anteriorly, not exceeding anterior margin of tegumen. Tegumen sub-trapezoidal, with a shallow anterior emargination. Costal part of valva with basal 2 / 5 uniformly narrow, widened at middle, narrowed from beyond middle to rounded apex; ventral margin convex medially; costal band shallowly concave basally; transtilla wide, rounded at apex. Sacculus trapezoidal, base approximately twice as wide as base of costal part of valva; dorsal margin sclerotized, slightly concave medially, with several small spines in distal 1 / 2. Saccus as long as uncus, gradually narrowed from base to middle, distal 1 / 2 obviously slender, rounded at apex. Juxta broadly U-shaped. Phallus straight, basal 2 / 5 uniform, distal 3 / 5 tapered to apex. Female unknown.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	distribution	Distribution. China (Zhejiang).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10E36432FABBF4CFCD0FA2C.taxon	etymology	Etymology. The specific epithet is derived from the Latin tenuis (thin) and spina (spine), referring to the dorsal margin of the sacculus with several small spines in distal 1 / 2.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	description	(Figs 22, 44, 52)	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	materials_examined	Type material. CHINA, Xizang: Holotype ♂, Yadong Village (29.33 ° N, 95.34 ° E), Motuo County, 833 m, 16. VIII. 2017, leg. MJ Qi & XF Yang, slide No. ZXJ 18381. Paratypes, Xizang: 1 ♀, same data as holotype, slide No. ZXJ 19600; Yunnan: 1 ♂, Xiajinchang, Malipo County, Wenshan, 1470 m, 27. VII. 2016, leg. KJ Teng et al., slide No. ZXJ 19389.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	diagnosis	Diagnosis. The new species is similar to M. dorsolobulata Wang, 2016 in features of the male genitalia. It can be distinguished by the ventral margin of the costal part of the valva straight in the distal 1 / 2, and the sacculus with a band-shaped process at the middle on the dorsal margin. In M. dorsolobulata, the ventral margin of the costal part of the valva is slightly produced, and the sacculus has a lobate process at base on the dorsal margin (Yin & Wang 2016: 136, fig. 7).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	description	Description. Adult (Fig. 22). Forewing length 4.0 – 4.5 mm. Head with pale yellow scales. Labial palpus pale yellow; second segment with dense black scales in distal 1 / 3 on outer surface, black at apex; third segment black medially, approximately half length of second segment. Antenna yellow; scape black basally on dorsal surface; flagellum alternated with black on dorsal surface. Thorax pale yellow; tegula pale yellow, with dense black scales basally. Legs pale yellow, with exceptions on ventral surface: tibia of foreleg black except pale yellow at middle and at apex, tarsus black except pale yellow at base of basal tarsomere and at apices of basal two and apical one tarsomeres, tibia of midleg with scattered black scales distally, tarsus black except pale yellow at apices of basal two tarsomeres and pale yellow at apical one tarsomere, hindleg with sparse black scales on tibia, all femora black apically. Forewing with costal margin arched, apex pointed; ground colour pale yellow, with scattered black scales; costal margin with diffused black scales along basal 1 / 3; costal spot black, diffused posteriorly; apical patch black; plical spot black, placed at distal 2 / 5 of fold; discal and discocellular spots black, discocellular spots placed one above the other, spot at posterior angle diffused to connected with tornal spot; fringe yellow, tipped with dark brown. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 44). Uncus wide at base, abruptly narrowed to middle, distal 1 / 2 uniformly slender. Tegumen arched, almost uniformly wide. Costal part of valva narrow at base, gradually widened to middle length, thereafter distinctly narrowed to pointed apex, densely setose ventrodistally; ventral margin obtusely produced at middle, distal 1 / 2 straight; costal band slightly convex medially, extending beyond tip of costal margin; transtilla narrowed toward middle, straight at apex. Sacculus wide at base, slightly narrowed to basal 2 / 3, distal 1 / 3 uniformly narrow; apex truncate, with a row of verrucaes; dorsal margin heavily sclerotized in distal 1 / 2, with a curved band-shaped process extended from middle; ventral margin sclerotized, forming a narrow band. Saccus short and broad, slightly longer than uncus. Juxta U-shaped. Phallus longer than costal part of valva, basal 1 / 2 tubular, distal 1 / 2 with several curved, irregularly shaped belts; cornutus absent. Female genitalia (Fig. 52). Papillae anales narrowed posteriorly, setose on dorsal surface. Apophyses posteriores approximately twice as long as apophyses anteriores. Eighth sternal plate spiculate; posterior margin bearing long setae, deeply and narrowly incised medially, forming two large semicircular lateral lobes; anterior margin convex medially. Lamella antevaginalis with posterior margin straight medially, anterior margin concave rectangularly medially, laterally extending outward and forming two lateral lobes. Ductus bursae membranous, posterior 1 / 2 uniform, anterior 1 / 2 widened; ductus seminalis arising from ductus bursae near entrance of corpus bursae. Corpus bursae ovate, longer than ductus bursae; signum small, with several tiny teeth and two large spines.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	distribution	Distribution. China (Xizang, Yunnan).	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
30635100E10F364D2FABBC47FEB2FA70.taxon	etymology	Etymology. The specific epithet is derived from the Latin verticalis (upright), referring to the truncate apex of the sacculus.	en	Zhu, Xiaoju, Wang, Shuxia (2025): Taxonomy of the facialis species-group of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of nineteen new species. Zootaxa 5637 (1): 99-125, DOI: 10.11646/zootaxa.5637.1.4, URL: https://doi.org/10.11646/zootaxa.5637.1.4
