The genus Lecithocera (Lepidoptera: Lecithoceridae) from China, with descriptions of twenty-one new species Author Yu, Shuai ED27A3A5-C89F-4341-83F1-8141A0D980C4 College of Life Sciences, Nankai University, Tianjin 300071, P. R. China. & College of Life Sciences, Liaocheng University, Liaocheng 252000, P. R. China. yushuai088@163.com Author Wang, Shuxia 648D6695-A0B9-483C-8C19-61F81EB5238D College of Life Sciences, Nankai University, Tianjin 300071, P. R. China. shxwang@nankai.edu.cn text European Journal of Taxonomy 2024 2024-02-29 924 1 74 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2447/10847 journal article 10.5852/ejt.2024.924.2447 2118-9773 10803382 C06B6616-6766-4A9E-9FE8-8463FB56449C Lecithocera medogensis sp. nov. urn:lsid:zoobank.org:act: 401DBB53-490C-4312-8678-58EE21AC71DE Figs 3E , 8A , 12E , 16H , 20A Diagnosis The new species is similar to L. mylitacha Wu & Liu, 1993 in the male genitalia. It can be distinguished by the seventh abdominal sternite with subtriangular posterolateral lobes, and in the female genitalia by the signum of the corpus bursae with a tooth and without denticles; in L. mylitacha , the posterolateral lobes of the seventh abdominal sternite are narrow taenioid ( Park & Wu 2010: 66 , fig. 14), and the signum has dense denticles and lacks a tooth ( Park & Wu 2010: 69 , fig. 23). Etymology The specific epithet is derived from the type locality. Type material Holotype CHINA – Xizang Autonomous Region [Tibet] • ♂ ; Mêdog County ; 28º37′ N , 94º31′ E ; 880 m a.s.l. ; 16 Aug. 2003 ; X.P. Wang and H.J. Xue leg.; slide no. YS19166 ; NKU . Paratypes ( 63 ♂♂ , 9 ♀♀ ) CHINA – Xizang Autonomous Region [Tibet] • 1 ♂ , 1 ♀ ; same collection data as for holotype; slide nos ZMR10119 ♂, LSR11238 ♀; NKU • 8 ♂♂ , 1 ♀ ; Mêdog , Beibengxiang ; 780 m a.s.l. ; 12 Aug. 2003 ; X.P. Wang and H.J. Xue leg.; slide nos LSR11229 ♂, LSR11237 ♀, LSR12032 ♂, LSR12033 ♂, ZMR10373 ♀; NKU • 37 ♂♂ , 8 ♀♀ ; Mêdog , Beibengxiang ; 987 m a.s.l. ; 12‒13 , 15 Aug. 2017 ; M.J. Qi and X.F. Yang leg.; slide nos YS19067 ♂, YS19068 ♀, YS19251 ♂, YS19253 ♂, YS19482 ♂; NKU • 2 ♂♂ , 3 ♀♀ ; Mêdog , Beibengxiang , Fangkongdong ; 750 m a.s.l. ; 1 Aug. 2018 ; M.J. Qi leg.; slide nos YS19698 ♂, YS19703 ♀; NKU • 4 ♀♀ ; Mêdog , Gelin Village ; 894 m a.s.l. ; 14 Aug. 2017 ; M.J. Qi and X.F. Yang leg.; slide no. YS19252 ; NKU • 4 ♂♂ ; Mêdog , Gelin Village ; 1063 m a.s.l. ; 29 Jul. 2018 ; M.J. Qi leg.; NKU • 8 ♂♂ , 1 ♀ ; Mêdog , Yadong Village ; 833 m a.s.l. ; 16 Aug. 2017 ; M.J. Qi and X.F. Yang leg.; NKU • 2 ♂♂ ; Mêdog , Jiangxin Village ; 780 m a.s.l. ; 30 Jul. 2018 ; M.J. Qi leg.; slide no. YS19488 ; NKU • 1 ♂ , 1 ♀ ; 2. Aug. 2018 ; Mêdog , Yadong ; 833 m a.s.l. ; M.J. Qi leg.; slide nos YS19487 ♂; NKU . Description ADULT ( Figs 3E , 7A ). Wingspan 10.5‒14.0 mm. Head yellowish brown, orange yellow on lateral sides. Antenna orange white; flagellum ringed with brown. Labial palpus with second palpomere orange white on inner surface, yellowish brown on outer surface; third palpomere orange white dorsally, dark brown ventrally, shorter than second palpomere. Thorax and tegula yellowish brown. Forewing with costal margin slightly arched, apex blunt, termen oblique; ground colour orange white, with scattered dark brown scales; markings blackish brown: basal streak wide, about ¼ length of costal margin; discal stigma small, rounded; discocellular stigma larger, elliptical; tornal streak wide, diffused to below discocellular stigma anteriorly; fringe orange white, mixed with brown scales; R 3 and R 4+5 short-stalked, R 5 to apex, M 2 and M 3 subparallel, CuA 1 and CuA 2 short-stalked. Hindwing and fringe grey; fringe with orange white basal line; M 3 and CuA 1 long-stalked, almost coincident. MALE GENITALIA ( Fig. 12E ). Uncus broadly V-shaped; caudal lobe digitiform, rounded apically. Gnathos with basal plate subrectangular, arched outward on posterior margin; median process wide at base, narrowed to distal ¼ where it is curved, then slender to pointed apex. Valva broad basally, narrowed to cucullus; cucullus about half length of valva, slightly widened medially, narrowed from middle to rounded apex, shallowly concave on costal margin basally, setose on ventral half, with two rows of bullet-shaped setae along ventral margin medially; costal bar narrow, gently angled at middle; sacculus distinct basally, narrow taenioid, about ¼ length of ventral margin of valva. Vinculum broad; saccus not developed. Juxta shield-shaped, with small notch at middle on posterior margin, with small triangular projection at middle on anterior margin; posterior lobe crescent-shaped basally, narrow taenioid distally, extending outward. Aedeagus shorter than valva, tubular except wider at base, without dorsal denticle, with dense granules in vesica; cornuti consisting of numerous spines running from basal ¼ to middle, and tooth apically. SEVENTH ABDOMINAL STERNITE ( Fig. 16H ). Anterolateral rib thin, forked basally, reaching before posterior margin of sixth abdominal sternite; posterolateral lobe weakly sclerotized, triangular. FEMALE GENITALIA ( Fig. 20A ). Eighth abdominal sternite arched on posterior margin. Apophyses posteriores slightly shorter than twice as long as apophyses anteriores. Antrum cup-shaped, wider than long, spiculose. Ductus bursae slightly shorter than corpus bursae, wrinkled, narrowed posteriorly; ductus seminalis arising from about middle of ductus bursae, dilated subbasally and forming sac, then slender. Corpus bursae ovate; signum rounded, weakly sclerotized, with large, heavily sclerotized tooth situated posterior to middle. Distribution China ( Xizang [ Tibet ]).