taxonID	type	description	language	source
03984C77FB16FFDFFF1EFA61FEBCFA7F.taxon	description	1835 (Pisces).]	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDFFF1EFA61FEBCFA7F.taxon	diagnosis	Diagnosis. The genus is readily distinguished from related taxa by several diagnostic characters: white wings bearing straight grayish-brown transverse lines, an elongate forewing discal spot, hind wing tail on vein M 3 resembling a swallowtail, and an asymmetrical furca in the male genitalia (Prout 1915; Inoue 1985; Cheng et al. 2024). Species Account	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	description	Chinese common name: 中Îǟnă (Figs 1 – 2, 29 – 30, 53, 57)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	materials_examined	Material examined. Holotype, ♂, China: Yunnan (IZCAS): Tengchong, Dahaoping, 2020 m, 5 – 7. VIII. 2007, leg. Dayong XUE, slide no. Geom- 03132. Paratypes. China: Yunnan (IZCAS): 1 ♀, Tengchong, Zhengting, 1833 m, 6 – 7. VIII. 2013, leg. Xinxin LI, slide no. Geom- 3133, IOZ LEP M 07667; 1 ♀, Baoshan, Baihualing, 1 – 2. VIII. 2013, leg. Shuxian LIU, IOZ LEP M 07664. Vietnam (ZFMK): 2 ♂ 3 ♀, N-Vietnam, Mai-chau, 25 km SE Moc-chau, 1100 – 1400 m, 14 – 18. XI. 1994, leg. Sinjaev & loc., slide no. 10029, 10030; 7 ♂ 6 ♀, N-Vietnam, Mai-chau, Urwald, 40 km SE Moc-chau, 1400 m, 7 – 15. IV. 1995, leg. Sinjaev & loc.; 15 ♂ 5 ♀, N-Vietnam, Mt. Fan-si-pan, Cha-pa (= Sapa), 1500 – 2400 m, 25. III – 30. IV. 1995, 10. VI – 6. VII. 1994, 8 – 29. V. 1993, leg. Sinjaev, Schintlmeister & einh. Sammier, ex. coll. A. Schintlmeister. Laos (ZFMK): 1 ♀, No-Laos, Xieng Khouang, V – VI. 1995.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	diagnosis	Diagnosis. This species can be distinguished from all other known congeners by its centrally located and short furca.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	description	Description (Figs 1 – 2). Head. Antennae black diffused with white on basal 13 to 16 segments dorsally. Frons black on upper one third to one half, remainder white. Labial palpus black, suffused with white scales apically. Vertex white. Thorax. Patagia, tegulae and thorax with white scales. Legs white; fore- and median legs suffused with black scales internally, black patches respectively present between femora and tibia, tibia and tarsus; hind tibia undilated in males, without hair-pencil, both sexes with two pairs of spurs. Wings. Ground colour white. Forewing length: ♂ 25 – 28 mm; ♀ 26 – 28 mm. Forewing densely covered with diffuse pale grey striation; antemedial and postmedial lines broad and greyish brown; the former being oblique and straight, the latter slightly curved, discal spot linear and pale grey; terminal line black, invisible near apex and anal angle; fringes mostly yellowish brown, white near apex and anal angle; outer margin straight. Hind wing with a obliquely straight, greyish brown medial line, not extending to costa and anal margin; Pale grey striation present near submarginal area; terminal line black, invisible near tip of tail and anal angle; outer margin bearing a short, distinct tail with an acute tip and well-defined shoulders, two basal spots present (anterior dark red and surrounded by black scales, the posterior black); fringes mostly reddish brown, but white near tip of tail and anal angle. Underside. Wings white with indistinct transverse lines. In venation, forewing with veins R 1 and R 2 coincident. Abdomen. Abdomen white without setal comb on male third sternite. Male genitalia (Figs 29 – 30). Uncus stout and short with rounded apex, basal width equal to length. Socii small and membranous. Gnathos with median process broad and tongue-like. Valva simple, with ventral margin forming a blunt medial angle and apically rounded. Furca characteristically arising at the middle, short, not reaching median process of gnathos, ventral surface with a spinose band and a short row of thorns at apex. Saccus semicircular. Aedeagus slender, with vesica bearing a patch of cornuti composed of short spines, all of similar size. Female genitalia (Fig. 53). Lamella postvaginalis small and rounded, lamella antevaginalis short and broad, concave medially. Colliculum present. Ductus bursae long and slender, sclerotized and ribbed at anterior one-third. Corpus bursae spherical, about one half length of ductus bursae, bearing a signum; signum large, rounded with marginal spines, disc small.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	distribution	Distribution. China (Yunnan), Vietnam, Laos.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB16FFDAFF1EFC9CFC6DFCB2.taxon	etymology	Etymology. The specific name is derived from the Latin prefix medio-, meaning ‘ middle’ and ‘ median’ and refers to the fact that the furca of the male genitalia is arising medially.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	description	Chinese common name: Ḟƪkš (Figs 3 – 4, 31 – 32)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	materials_examined	Material examined. Holotype, ♂, China: Xizang (Tibet, IZCAS): Cona, Mama, 18 – 20. VI. 2015, 2930 m, leg. Xinxin LI, slide no. Geom- 3248, IOZ LEP M 18520. Paratypes. China: Xizang (IZCAS): 3 ♂, Cona, Lexiang, Senmuzha, 2741 m, 2 – 3. VI. 2016, leg. Xinxin LI, IOZ LEP M 20440, 20434, 20466. Bhutan (ZSM): 2 ♂, Trongsa dzongkhag, road Trongsa to Yotong La, 5 km NE Trongsa, 3040 m, 19. VI. 2007, leg. Kautt & Naumann, BC ZSM Lep 26869, BC ZSM Lep 62429.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	diagnosis	Diagnosis. Discussed in next new species account.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	description	Description (Figs 3 – 4). Head. Antennae greyish brown with 13 – 15 basal segments white dorsally. Frons blackish brown on upper one third, the remainder white. Labial palpus dark yellowish brown, suffused with white scales apically and ventrally. Vertex white. Thorax. Patagia, tegulae and thorax white. Legs white, suffused with black scales inside fore- and median legs, black patches present between femora and tibia of fore- and median legs, hind tibia dilated in male, with hair-pencil, both sexes with two pairs of spurs. Wing s. Ground colour yellowish white. Forewing length: ♂ 22 – 23 mm. Forewing densely diffused with pale grey striation between antemedial and postmedial lines and near submarginal area; short blackish grey streaks present on costa; antemedial and postmedial lines obliquely straight, grey, suffused with yellowish brown scales, the former nearer to the latter on inner margin than on costa; discal spot linear and greyish brown; terminal line black, invisible near apex and anal angle; fringes mostly yellowish brown, white near apex and anal angle. Outer margin almost straight except at apex and anal angle which is slightly curved. Hind wing with medial line straight, greyish brown, not extending to costa and anal margin; pale grey striation present near submarginal area; terminal line black, invisible near anal angle; outer margin decorated with very small tail with acute tip and strong shoulder, tail bearing an indistinct dark red streak at base, covered by a blackish grey band inside; fringes mostly reddish brown, white near anal angle. Underside. Wings white, transverse lines faintly indicated. In forewing venation, veins R 1 and R 2 coincident. Abdomen. Abdomen white, males with setal comb on third sternite. Male genitalia (Figs 31 – 32). Uncus short and stout, rounded at apex, length slightly shorter than basal width. Socii small and membranous. Gnathos with median process small and rounded. Valva simple, rounded apically; costa straight. Furca developed on right side, short and very stout, not reaching median process of gnathos, straight, with a row of stout thorns interiorly all its length. Saccus rounded and short. Aedeagus cylindrical; vesica with an elongate group of stout spines of differing length. Female genitalia. Unknown.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	distribution	Distribution. China (Xizang), Bhutan.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB13FFD8FF1EFA8CFDE4FE66.taxon	etymology	Etymology. The specific name is derived from the Latin adjective angustus, which means ‘ narrow’ or ‘ restricted, ’ referring to its narrow hind wing tail.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	description	Chinese common name: Ǐ 井上ǟnă (Figs 5 – 6, 33 – 34)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	materials_examined	Material examined. Holotype, ♂, Vietnam: Ha Giang (IZCAS), 18 – 20. VI. 2015, slide no. Geom- 7206, IOZ LEP M 50009.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	diagnosis	Diagnosis. This species is externally similar to O. angusta sp. nov. (Figs 3 – 4, 31 – 32) and O. inouei Stüning, 2000 (Figs 7 – 8, 35 – 36), but can be distinguished by the longer tail at the end of vein M 3 on the hind wing, which also bears an oval greyish patch. Additionally, the frons is brown, whereas in O. angusta sp. nov. and O. inouei, it is black and white, respectively. In the male genitalia, the furca differs in shape: in O. parainouei sp. nov. and O. angusta sp. nov., it is narrower at the base and broad distally, whereas in O. inouei, the furca is uniformly wide throughout its length. The valva of O. parainouei sp. nov. is more elongated than in the other two species. Furthermore, cornuti of the aedeagus in O. angusta sp. nov. is the stoutest among the three species.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	description	Description (Figs 5 – 6): Head. Antennae brown, dorsally white, basal segments white; frons brown on upper one-third, white on lower two-thirds; labial palpus brown, ventral side and tip of second segment dirty white; vertex white. Thorax. Dorsal side of thorax white. Legs white; all legs with inner side of femur, apex and inner side of tibia dark brown. Wings. Broad and somewhat greyish white. Forewing length: ♂ 23 mm. Forewing with costal area sparsely infused with short black streaks, wing surface unevenly covered with diffuse pale grayish-brown striations; antemedial and postmedial lines grayish-brown, former being obliquely straight and latter curved, outer half of antemedial line and discal spot, and inner half of postmedial line tinged with pale yellowish-brown; discal spot short, not reaching lower angle of cell; outer margin nearly straight. Hind wing with medial line sharply oblique extending below the upper angle of cell towards outer margin near anal fold, submarginal area suffused with pale grayish-brown striations except at apex; outer margin slightly arched above M 1, tail short, about 1.5 mm in length, shoulder weak and small; basal area of tail bears an elongated, oval greyish patch with two distinct yellowish brown spots, the larger situated above the M 3 vein and the smaller below it. Terminal lines of both wings blackish-brown, fringes grayish-brown, basal half mixed with uneven yellowish-brown; terminal lines and fringes white at apex and anal angle. Underside. White, transverse lines and discal spot on both wings indistinct; forewing features a sparsely but distinctly scattered dark grayish-brown scales near apex, hind wing similarly scaled but distally. Abdomen. Abdomen white, with setal comb on male third sternite. Male genitalia (Figs 33 – 34). Uncus bell-shaped, with small triangular projections at base, upper half fingerlike with rounded apex. Socii minute extended and membranous. Gnathos with median process small, tongue like, and spinulose. Furca club-shaped, arising more or less right side, length almost reaching the base of costa, apex and inner margin bearing dense spines. Saccus semicircular. Valva simple, elongate, apex slightly narrower with tip rounded; costa with small protrusions at basal and distal one thirds respectively; sacculus slightly convex medially. Aedeagus cylindrical, short and stout, slightly swollen medially; cornuti consisting of over a dozen small spines of varying lengths, some approaching or exceeding aedeagus diameter. Female genitalia. Unknown.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	distribution	Distribution. Vietnam.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB11FFD8FF1EF8F8FE6DF856.taxon	etymology	Etymology. The specific name is derived from the Latin prefix para-, and is used to indicate a high morphological similarity with O. inouei.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	description	Chinese common name: 塔üǟnă (Figs 9 – 12, 37 – 38, 54, 58)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	materials_examined	Material examined. Holotype, ♂, China: Yunnan (IZCAS): Weixi, Tacheng, 13 – 14. VII. 2014, leg. Xinxin LI, slide no. Geom- 2882, IOZ LEP M 16907. Paratypes. China: 2 ♂ 1 ♀, data same as holotype, slide no. Geom- 2883, 2943, IOZ LEP M 16913, 16905, 14388.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	diagnosis	Diagnosis. Discussed in next new species account.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	description	Description (Figs 9 – 12). Head. Antenna white on dorsal side. Frons and labial palpus greyish brown, slightly tinged with yellowish-brown; lower part of frons paler. Vertex white, base faintly tinged with yellowish green. Thorax. Dorsum white; patagia and base of tegulae faintly yellowish green. Legs white. Wings. Ground color white, lines grey, faintly tinged with greyish yellow, moderately broad; grey striations sparse. Forewing length: ♂ 26 – 27 mm, ♀ 28 mm. Forewing with antemedial line oblique, distinctly nearer to postmedial line on inner margin than on costa. Postmedial line straight; discal spot slender, not reaching costa; terminal line extremely thin, dark grey; fringes white; outer margin straight. Hind wing with postmedial line originating from vein M 1, where about 2 mm to upper angle of discal cell, extending obliquely to near distal end of CuA 2; outer margin straight from apex to M 1, with a distinct shoulder at M 1, tail small, about 2.5 – 3 mm in length, with two spots at base, anterior one orange-yellow, small, bordered with black scales except outer margin, inner side diffused sparse black scales, anterior and posterior borders with dense black scales, and area larger than orange-yellow part; posterior spot black, small or nearly obsolete; faint greyish black shading present between two spots. Terminal line absent. Fringes pale yellow to light orange-yellow; white at apex, upper margin of shoulder, distal half of tail, and below CuA 2. Underside. White, transverse lines on both wings and discal spot of forewing discernible. Abdomen. Abdomen white, with setal comb on males third sternite. Male genitalia (Figs 37 – 38). Uncus curved and spine-like, base expanded into small blunt lateral projections. Socii membranous, barely extending beyond uncus base. Gnathos with median process tongue-shaped, length and width similar. Furca developed on right side, robust, distal one fifth sharply bent with a row of short spines, only reaching base of costa. Saccus rounded. Valva simple, apex elliptically rounded, mostly covered with setae of varying length except near apex. costa slightly convex medially; sacculus straight; aedeagus cylindrical, uniform in width; cornuti composed of two bundles of spines-one with longer, about twice of aedeagus diameter and another with shorter spines, two thirds of aedeagus diameter; a strongly sclerotized triangular patch present beside the spinose bundle. Female genitalia (Fig. 54). Posterior apophyses about five times as long as anterior apophyses. Lamella postvaginalis elongated. Colliculum small, length slightly longer than width, located at posterior end of ductus bursae. Ductus bursae uniform in width. Corpus bursae flattened oval. Signum circular, positioned mid-ventrally; disc nearly rounded, about three fifth of signum diameter, width of frill narrower at anterior side than posterior side, bears few central minute spines; margin evenly decorated with spines in varying length, the longest slightly longer than one fourth of signum diameter.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	distribution	Distribution. China (Yunnan).	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD6FF1EF9B4FC55F9C2.taxon	etymology	Etymology. The specific name is named after the type locality.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	description	Chinese common name: Þĸƪkš (Figs 13 – 16, 39 – 40, 55, 59)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	materials_examined	Material examined. Holotype, ♂, China: Shaanxi (IZCAS): Ningshan, Huoditang, 1538 m, 11 – 15. VII. 2012, leg. Nan JIANG, slide no. Geom- 2939, IOZ LEP M 7961. Paratypes. China: Shaanxi (IZCAS): 1 ♀, same locality, same collector, slide no. Geom- 2940, IOZ LEP M 7960; 1 ♂, Taibai, Huangbaiyuan, 1323 m, leg. Jing LI, 17 – 18. VII. 2012, IOZ LEP M 7991; Ningshan, Guanghuojie, 1081 m, leg. Shuxian LIU, 26 – 27. VII. 2014.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	diagnosis	Diagnosis. O. qinlingensis sp. nov. (Figs 13 – 16, 39 – 40, 55, 59), O. tachengensis sp. nov. (Figs 9 – 12, 37 – 38, 54, 58) and O. pallidula Inoue, 1985 (Figs 17 – 20, 41 – 44, 56, 60) are externally similar to each other, among them, the body size and wingspan of O. pallidula is the smallest; the tail length of O. tachengensis sp. nov. is the shortest. O. qinlingensis sp. nov. is distinctive in the almost parallel antemedial and postmedial lines, however, in O. tachengensis sp. nov. and O. pallidula, the two lines approach each other on inner margin. In the male genitalia, O. tachengensis sp. nov. can be differentiated by the broader valva and the thickest furca. The other two species are also can by distinguished by the furca: the tip of the furca of O. qinlingensis sp. nov. is sharp; the furca of O. pallidula is moderately long, but sometimes not reaching the median process of gnathos. The female genitalia of O. qinlingensis sp. nov. are significantly larger than the other two species, possessing the thickest ductus bursae along with a smaller central disc, a broader frill, and short spines. In contrast, O. pallidula has the largest central disc; while in O. tachengensis sp. nov., the central disc is the smallest. In addition, O. tachengensis sp. nov. possesses a slender ductus bursae (approximately one-third the diameter of the corpus bursae).	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	description	Description (Figs 13 – 16). Head. Antenna white dorsally. Frons greyish brown on upper part, gradually paler downward, nearly white at lower margin. Labial palpus with lateral side greyish yellow-brown, dorsal and ventral margins white. Vertex white. Thorax. Patagia, tegulae, and thoracic dorsum white. Legs white. Wings. Ground color dull white; lines grey. Forewing length: ♂ 25 – 26 mm. Forewing moderately broad and scattered with grey striations throughout; antemedial and postmedial lines nearly parallel; discal spot bar-like, not reaching costa; terminal line extremely thin; fringes white; outer margin nearly straight. Hind wing, postmedial line originating below upper angle of discal cell (at divergence of Rs and M 1), extending obliquely outward to near distal end of CuA 2; grey striations scattered outside postmedial line; sparse black scales diffused along both sides of vein 2 A near anal angle; fringes mostly yellow to pale yellow, white at apex, M 1 end, tip of tail, and anal angle; outer margin straight from apex to above vein M 1, slightly convex on ends of M-veins; tail acutely pointed, length about 3 mm, two spots present at tail base: anterior spot orange-red encircled by black border, posterior spot black, indistinct inside; terminal line absent. Underside. White; antemedial and postmedial lines, discal spot of forewing, and postmedial line of hind wing discernible. Abdomen. Abdomen white with setal comb on male third sternite. Male genitalia (Figs 39 – 40). Uncus spine-like with blunt apex, base expanded into nearly circular lateral projections. Socii minute and membranous. Gnathos with median process semicircular. Furca developed on right side, robust, apex pointed with a small cluster of spines, sinuate (inverted ‘ S’ - shaped), reaching above costal base. Saccus rounded. Valva simple; costa more sclerotized, slightly wider medially, near apex with downward-projecting long setae; outside area membranous. Sacculus slightly convex medially and near base. Aedeagus shape, cornuti and spinose patch similar to O. tachengensis (long spines falled off in illustration), but smaller (aedeagus length 2.7 mm vs. O. tachengensis 3.3 mm). Female genitalia (Fig. 55). Posterior apophyses about four times of anterior apophyses in length. Lamella postvaginalis rounded, margins slightly folded. Ductus bursae short and thick, bent at anterior one third; colliculum located at posterior part of ductus bursae, width broader than length. Corpus bursae rounded. Signum circular, midventral; width of frill narrower at anterior side than posterior side, disc about 2 / 5 of signum diameter; frill strongly sclerotized, evenly decorated with spines in different length, the longest about 1 / 4 of signum diameter.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	distribution	Distribution. China (Shaanxi).	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1FFFD7FF1EFF57FC54FA0A.taxon	etymology	Etymology. The specific name is named after the type locality.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	description	Chinese common name: ƗDzƪkš (Figs 21 – 22, 45 – 46)	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	materials_examined	Material examined. Holotype, ♂, China: Guangxi (IZCAS): Maoershan, Antangping, 1579 m, 17 – 18. VIII. 2012, leg. Chao YANG, slide no. Geom- 2833, IOZ LEP M 7669. Paratypes. China: 1 ♂, same locality, same collector, slide no. Geom- 4413, IOZ LEP M 6457.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	diagnosis	Diagnosis. This species is similar to O. latimarginaria Leech, 1897 (Figs 23 – 26, 47 – 50) and can be distinguished by the narrower postmedial line of the forewing, and extremely slender and long furca. The male genitalia of this species are also similar to those of O. stueningi Inoue, 1993 (Figs 51 – 52) for sharing a long and slender furca; however, the furca of O. zhui sp. nov. is straighter, and this species is much smaller than O. stueningi (Figs 27 – 28) (possible the largest Ourapteryx species, the male forewing length: 37 – 38 mm).	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	description	Description (Figs 21 – 22). Head. Antennae dorsally dark grayish-brown; frons and labial palpus yellowish-brown; vertex white. Thorax. Dorsal side of thorax, and wings white, patagia tinged pale yellow laterally. Fore- and median legs white; tibia and first tarsomeres with black spots; distal part of femur black; inner side of foreleg tibia dark grey; hind leg white, without any dark markings. Wings. Broad and ground color dull white. Forewing length: ♂ 30 mm. Both wings with black terminal lines, thin and discontinuous; fringes with basal half orange-red, distal half dark grayish-brown, white at anal angles of both fore- and hind wings, upper margin of hind wing shoulder angle, and tip of tail. Forewing with costal black from base to antemedial line; a large dark brown patch at apex, tapering downward near anal fold; area below costa sparsely scattered with uneven short black transverse streaks from base to postmedial line; antemedial and postmedial lines dark grayish-brown tinged yellowish-brown; discal spot dark grayish-brown, anterior end black and reaching costa, posterior end extending to lower angle of cell, tinged with distinct yellowish-brown; area between postmedial line and termen densely decorated with fine dark grayish-brown striations; outer margin slightly arched. Hind wing with postmedial line dark grayish-brown, extending obliquely from upper angle of cell to near termen at CuA 2; distal area between Rs and CuA 2 suffused with uneven pale yellowish-brown and grey fine striations; sparse black scales distally scattered on both sides of vein 2 A; tail base bearing two patches flanking M 3: upper patch orange-red with black rim, lower patch black (sometimes intermixed with sparse orange-red scales), the two patches usually accompanied by a small black dot above and below; outer margin straight from apex to above M 1, angulated above M 1 forming a distinct shoulder angle, convex at end of M 3 and forming a tail (length 3 – 4 mm), below which weakly sinuate to anal angle. Underside. Wings white, markings paler than upperside; lacking yellowish-brown or orange-red on both wings; forewing with large dark brown patch on apex, tapering to anal fold, discernible as silver-grey on upperside. Abdomen. Abdomen white, without setal comb on male third sternite. Male genitalia (Figs 45 – 46). Uncus triangular at base with slightly protruding lower corners, distal half short and spine-like. Socii small and membranous. Gnathos with median process shovel-shaped, width slightly broader than length, lateral arms with basal part slightly protruding. Furca developed on right side, extremely slender, slightly curved, extending to middle of uncus, tip slightly swollen with internal sclerotized spines. Saccus semicircular, small. Valva simple, uniform in width; costa more sclerotized, distal margin with a row of long downward-projecting setae, membranous outer margin slightly concave; sacculus shallowly curved. Aedeagus cylindrical, uniform in width; cornuti consisting of a dense cluster of fine hair-like spines. Female genitalia. Unknown.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	distribution	Distribution. China (Guangxi).	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	etymology	Etymology. The species is named after the renowned entomologist Zhu Hongfu.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
03984C77FB1EFFD4FF1EFF0FFA8EFA97.taxon	discussion	Remarks. The genitalia of two male specimens (BMNH slide no. 14195 from Hunan, China and ZFMK slide no. 10001 from Yunnan, China) appear consistent with those of this species, but due to the lack of molecular data and the geographical distribution differing from that of this type specimen, we cannot confirm their identity.	en	Cheng, Rui, Wen, Boxin, Han, Hongxiang (2025): Six new cryptic species of Ourapteryx Leach (Geometridae: Ennominae) from Asia. Zootaxa 5722 (4): 543-554, DOI: 10.11646/zootaxa.5722.4.5, URL: https://doi.org/10.11646/zootaxa.5722.4.5
