Torodora gemella Yu et Wang, 2022

Yu, Shuai, Zhu, Yanmei & Wang, Shuxia, 2022, Eighteen new species and fifteen new records of the genus Torodora Meyrick (Lepidoptera: Lecithoceridae) from China, Zootaxa 5133 (1), pp. 1-39 : 8-10

Torodora gemella Yu et Wang , sp. nov.

( Figs 6 , 24 , 41 )

Type material. CHINA, Hong Kong: Holotype ♂, Nam Chong (22°16′N, 114°09′E), 135‒150 m, 18.IV.2007, leg. HH Li, slide No. ZYM06497 . Paratypes (22♂ 4♀): 3♂, same data as holotype, slide No. ZYM06498 ; 3♂, Kadoorie Farm and Botanic Garden, 210 m, 12, 20‒21.IV.2007, leg. HH Li, slide No. ZYM06495 ; Guangdong : 2♂ 1♀, Nanling , Shaoguan, 1‒7.VIII.2006, leg. W Xiong & J Wang, slide Nos. YS 20178 ♂, YS20264 ♀ ; Chongqing: 1♂, Mt. Simian , 1000 m, 22.VII.2010, leg. XC Du & LF Song ; 6♂ 2♀, Mt. Simian , 1200 m, 8‒9.VIII.2012, leg. XF Yang & TT Liu, slide Nos. LSR12148 ♂, LSR12149 ♂; 2♂, Mt. Jinyun , 29.VIII.2010, leg. XC Du & CW Bi ; 5♂ 1♀, Mt. Jinfo , 1100 m, 4‒7.VIII.2012, leg. XF Yang & TT Liu, slide No. LSR12155 ♂.

Diagnosis. This new species is similar to T. flavescens Gozmány, 1978 in both appearance and male genitalia. It can be distinguished in the male genitalia by uncus with the apex wider than the base, the cucullus with the apex the same width as the base of the valva, and in the female genitalia by the crescent signum; in T. flavescens , the apex of the uncus is narrower than the base, the apex of the cucullus is narrower than the base of the valva ( Gozmány 1978: Pl. 50, fig. 147), and the signum is elliptical ( Park 2002: 164, fig. 40).

Description. Adult ( Fig. 6 ). Wingspan 14.0‒15.0 mm.

Head brown except orange white on frons and laterally. Antenna with scape brown except orange white along anterior and posterior margins; flagellum orange white. Labial palpus with second palpomere orange white on inner surface, brown on outer surface; third palpomere orange white dorsally, brown ventrally, as long as second palpomere.

Thorax and tegula brown. Forewing with costal margin slightly arched, apex obtusely rounded, termen shallowly concave; ground color dark brown, mixed with brown scales; costal spot orange white, small, at distal 1/4; discal stigma blackish brown, small; plical and discocellular stigmata blackish brown, elliptical, larger; fringe greyish brown, basal line pale yellow. Hindwing and fringe pale greyish brown; fringe with a pale yellow basal and a weak median lines. Legs pale yellow except femora and tibiae of fore- and hindlegs dark brown ventrally, tarsi dark brown dorsally at middle of first tarsomere and at base of remaining tarsomeres.

Male genitalia ( Fig. 24 ). Uncus wide at base, constricted medially; apex bilobed, wider than base, apical lobe thumbed, extending obliquely outward. Gnathos with basal plate rectangular, obtuse on posterior margin; mesial process wide at base, narrowed to basal 3/5, thereafter abruptly narrowed to pointed apex, curved ventrad at distal 2/5 by a right angle. Valva broad basally, narrowed to cucullus; cucullus widened to obliquely obtuse apex, apex as wide as base of valva, ventral margin straight; costa obtusely arched basally, deeply concave medially, obliquely straight distally; sacculus broadly banded, obtusely arched ventrally. Vinculum narrow. Juxta rectangular, wider than long, broadly concave on posterior margin forming two short posterolateral lobes, quadrately produced at middle on anterior margin; lateral lobe papillary, setose, arising from near posterolateral lobe. Aedeagus slightly shorter than valva, stout, tapered to apex, curved ventrad at basal 1/3; cornutus absent.

Female genitalia ( Fig. 41 ). Eighth abdominal sternite deeply concave in U shape at middle on posterior margin, forming two large lateral lobes. Apophyses posteriores about twice length of apophyses anteriores. Antrum membranous, funnel-shaped. Ductus bursae slightly shorter than corpus bursae, with sparse conic spines medially; ductus seminalis slender, arising from posterior 1/3 of ductus bursae, with dense granules on inner wall. Corpus bursae oblong, with a longitudinal granulose band about half length of corpus bursae; signum situated near entrance of corpus bursae, weakly sclerotized, crescent.

Distribution. China (Chongqing, Guangdong, Hong Kong).

Etymology. The specific epithet is derived from the Latin gemellus, referring to the apically bilobed uncus in the male genitalia.

Figures

FIGURES 1‒6. Adults of Torodora spp. (dorsal view). 1. T. acuminata sp. nov., paratype, female, slide No. YS20263; 2. T. atomata sp. nov., holotype, male, slide No. ZYM06217; 3. T. canaliculata sp. nov., holotype, male, slide No. YS20133; 4. T. costatiprolata sp. nov., holotype, male, slide No. YS20140; 5. T. dentisaccula sp. nov., holotype, male, slide No. YS20391; 6. T. gemella sp. nov., paratype, male, slide No. LSR12149. Scale bars = 2.0 mm.

FIGURES 19‒24. Male genitalia of Torodora spp. 19. T. acuminata sp. nov., holotype, slide No. YS20034; 20. T. atomata sp. nov., holotype, slide No. ZYM06217; 21. T. canaliculata sp. nov., holotype, slide No. YS20133; 22. T. costatiprolata sp. nov., holotype, slide No. YS20140; 23. T. dentisaccula sp. nov., holotype, slide No. YS20391; 24. T. gemella sp. nov., paratype, slide No. YS20178. Scale bars = 0.5 mm.

FIGURES 41‒45. Female genitalia of Torodora spp. 41. T. gemella sp. nov., slide No. YS20264; 42. T. gongshanensis sp. nov., slide No. YS20175; 43. T. longicornis sp. nov., slide No. YS20103; 44. T. parisortilega sp. nov., slide No. YS20323; 45. T. procerispinata sp. nov., slide No. YS20401. All paratypes. Scale bars = 0.5 mm.