Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China (III), with descriptions of eighteen new species Author Wang, Shuxia College of Life Sciences, Nankai University, Tianjin 300071, China. Author Zhu, Xiaoju 0000-0002-4590-8480 College of Life Sciences, Nankai University, Tianjin 300071, China. & zxjyouxiang @ 126. com; https: // orcid. org / 0000 - 0002 - 4590 - 8480 Author Tao, Zhulin 0000-0001-8519-6521 College of Life Sciences, Nankai University, Tianjin 300071, China. & tzl 2550993788 @ 163. com; https: // orcid. org / 0000 - 0001 - 8519 - 6521 text Zootaxa 2021 2021-06-30 4995 2 303 333 journal article 10.11646/zootaxa.4995.2.5 1175-5326 5056623 5F060FBC-3CD8-4329-8B2A-F26FEFB16A5D Meleonoma tetrodonta Wang , sp. nov. ( Figs 19 , 37 , 48 ) Type material. CHINA , Chongqing : Holotype • ♂ , Mt. Jinfo ( 29.00°N , 107.17°E ), 1700 m , 12.VII.2010 , leg. X.C. Du & S.W. Shi , slide No. YAH12305. Paratypes ( 26♂ 18♀ ): • 10♂ 8♀ , 12‒14.VII.2010 , other same data as holotype, slide No. YAH15261 ♂ ; Guizhou : • 3♂ , Kuankuoshui , Suiyang County , 1491 m , 6‒8.VII.2019 , leg. M. R . Xing et al .; Hubei : • 1♂ , Quanxi Town , Zhuxi County , 868 m , 11.VII.2017 , leg. W.D. Qi et al .; • 2♂ 1♀ , Mt. Bagua , Zhuxi County , 790 m , 12‒13.VII.2017 , leg. W.D. Qi et al .; Zhejiang : • 4♂ 2♀ , Qianmutian , Mt , Tianmu , 1320 m , 1.VII.2013 , leg. A.H. Yin & X.C. Wang ; • 2♀ , Qianjiangyuan , 866 m , 7–8.VII.2014 , leg. A.H. Yin et al .; • 1♀ , Zhongbeikeng , 804 m , 11.VII.2014 , leg. A.H. Yin et al ., slide No. ZXJ19329 ; • 2♂ , Sanmuping , 789 m , 14–15.VII.2014 , leg. A.H. Yin et al .; • 1♂ , Xiguan , 566 m , 18.VII.2014 , leg. A.H. Yin et al .; • 1♂ 2♀ , Baiyun , Jingning , 1102 m , 10.VII.2017 , leg. Z.G. Zhang et al .; • 2♂ 2♀ , Yujikeng , Jingning , 964 m , 11.VII.2017 , leg. Z.G. Zhang et al . Diagnosis. The new species is similar to M. denticulata ( Wang, 2004 ) and M. zeloxantha ( Meyrick, 1934 ) . It can be distinguished in the male genitalia by the large sub-rectangular uncus, the valva with a wide band on the ventral margin produced to a free sickle-like distal process; while the uncus is sub-trapezodial and the valva lacks a band on the ventral margin in M. denticulata ( Wang 2004: 225 , fig. 5) and M. zeloxantha ( Clarke 1963: 174 , pl. 84, fig. 4a-b). In the female genitalia, the new species can be distinguished from M. denticulata by the elliptical signum, while the signum is rounded in M. denticulata ( Wang 2004: 225 , fig. 16); from M. zeloxantha by the corpus bursae with one signum, while the corpus has two signa in M. zeloxantha ( Wang 2006a: 155 , fig. 264). Description. Adult ( Fig. 19 ). Forewing length 4.7‒5.5 mm . Head with vertex and occiput blackish brown, frons whitish yellow. Labial palpus yellow; second segment blackish brown in distal half, with a blackish-brown ring apically; third segment shorter than second segment, with a blackish-brown line from base extending to before apex on ventral surface, with a small dot at distal 1/3 on dorsal surface. Antenna: scape yellow except black basally on dorsal surface; flagellum black, annulated with yellow on ventral surface. Thorax and tegula blackish brown. Forewing with costal margin slightly arched, apex rounded; ground color blackish brown; median fascia orange yellow, with sparse brown scales, extending from before middle of costal margin obliquely outward to before tornus, gradually widened; distal spot at distal 1/6, orange yellow, inverted triangular; plical spot black, at basal 2/3 of fold; discal and discocellular spots black, at basal 2/3 and at outer margin of cell respectively; fringe concolorous with wing. Hindwing and fringe greyish brown. Legs yellow; on ventral surface, femur of foreleg blackish brown mixed with yellow scales, femora of mid- and hindlegs with scattered blackish-brown scales, tarsi of fore- and midlegs blackish brown except yellow at apices of basal two and apical one tarsomeres, tarsus of hindleg blackish brown except yellow at apices, all tibiae blackish brown except yellow at middle and at apex. Male genitalia ( Fig. 37 ). Uncus large sub-rectangular, length about twice of width, with four apical spines: median two spines weaker, lateral spines with a tuft of setae at base. Tegumen scissors-like as a whole, sclerotized on outer and anterior margins; lateral arm slightly narrowed anteriorly, rounded at apex. Valva broad sub-quadrate except narrowed basally; apex concave below dorsoapical corner, with an ovate setose area formed by dense long setae dorsoapically; ventral margin with a wide band, produced to a free sickle-like process directed dorsad to below distal 1/4 of costa; costa narrowly banded; transtilla being a sclerotized plate, joined medially by weakly sclerotized band. Sacculus triangular, with a thumb-shaped process at apex. Saccus short, inverted triangular, rounded at apex. Juxta U-shaped. Aedeagus as long as valva; tubular in basal 3/5, curved toward base distally; cornuti consisting of a branch of spines ( Fig. 37a ). Female genitalia ( Fig. 48 ). Papillae anales sub-rectangular. Apophyses anteriores 1/3 length of apophyses posteriores. Eighth tergite trapezoidal, slightly concave medially on posterior margin; eighth sternal plate sub-ovate, sinuate on posterior margin, rounded on anterior margin. Lamella postvaginalis banded, dorsal surface widened medially, narrowed laterally and connecting with eighth sternal plate; ventral surface deeply concave in U shape at middle on posterior margin, roundly produced on inner margin of concavity, broadly concave medially on anterior margin, triangularly produced anterolaterally, with a sclerotized edge extending from posterior angle of posterior margin to anterior angle, widened and arched inward medially. Lamella antevaginalis short, produced to a thumbshaped process anterolaterally. Antrum trapezoidal, extended outward and connected with lamella antevaginalis. Ductus bursae almost entirely sclerotized except membranous near corpus bursae. Corpus bursae as long as ductus bursae, elongate ovate, with spicules; ductus seminalis arising from posterior part of corpus bursae; signum small, elliptical, with several denticles ( Fig. 48a ). Distribution. China ( Chongqing , Guizhou , Hubei , Zhejiang ). Etymology. The specific epithet is derived from the Latin tetrodontus , referring to the uncus with four apical spines in the male genitalia.