Lecithocera angustifolia, Yu & Wang, 2024

Yu, Shuai & Wang, Shuxia, 2024, The genus Lecithocera (Lepidoptera: Lecithoceridae) from China, with descriptions of twenty-one new species, European Journal of Taxonomy 924, pp. 1-74 : 5-6

Lecithocera angustifolia sp. nov.

urn:lsid:zoobank.org:act:A6C9FABF-8D53-4F93-B76C-E485A4A82221

Figs 1C , 6A , 10C , 15C

Diagnosis

The new species is similar to L. montiatilis Park, 2009 in appearance by sharing a narrowly elongate forewing with an extremely oblique termen. It can be distinguished from L. montiatilis by having the hindwing with M 3 and CuA 1 coincident, and in the male genitalia by the cucullus gradually narrowed to apex; whereas in L. montiatilis , the veins M 3 and CuA 1 are stalked in the hindwing, and the cucullus is broad in basal ⅓ and extremely narrow in distal ⅓ ( Park 2009: 62, fig. 10).

Etymology

The specific epithet is derived from the Latin “ angustifolius ”, referring to the narrowly elongate forewing.

Type material

Holotype

CHINA – Yunnan Province • ♂; Gaoligongshan, Qinlangdang ; 27º42′ N, 98º16′ E; 380 m a.s.l.; 28 May 2017; K.J. Teng et al. leg.; slide no. YS19607 ; NKU.

Paratype

CHINA – Yunnan Province • 1 ♂; same collection data as for holotype except 29 May 2017; slide no. YS19608 ; NKU .

Description

ADULT ( Figs 1C , 6A ). Wingspan 11.5‒12.0 mm. Head greyish brown, with pale orange scales laterally. Antenna pale orange; dorsally flagellum ringed with dark brown. Labial palpus pale orange; second palpomere mixed with dark brown scales on outer surface; third palpomere slightly shorter than second palpomere. Thorax and tegula greyish brown. Forewing narrowly elongate, costal margin slightly arched, apex blunt, termen extremely oblique; ground colour greyish brown, mixed with blackish brown scales; markings blackish brown: basal streak wide at base; discal stigma small; discocellular stigma larger, elliptical; fringe greyish brown; R 3, R 4 and R 5 stalked, R 5 to termen near 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 coincident.

MALE GENITALIA ( Fig. 10C ). Uncus inverted subtrapezoidal, concave in broad V-shape on posterior margin; caudal lobe short digitiform, setose, rounded apically. Gnathos with basal plate trapezoidal; median process wide at base, narrowed to distal ⅓ where it is curved, then slender to pointed apex. Valva broad basally, narrowed to cucullus; ventral margin arched; cucullus about half as long as valva, slightly narrowed to rounded apex, shallowly concave on costal margin, setose, with several bullet-shaped setae basally along ventral margin; costal bar narrow, gently angled at middle; sacculus wide at base, narrowed to middle, then uniform to cucullus. Vinculum broad; saccus not developed, blunt on anterior margin. Juxta shield-shaped, semicircularly concave on posterior margin, produced at middle on anterior margin; posterior lobe semiovate basally, slender distally, extending outward. Aedeagus about 5/6 length of valva, tubular and arched, with two dorsal denticles of different sizes, with dense granules in vesica; cornuti consisting of row of spines at basal ⅓ and large sclerite bearing 2 denticles.

SEVENTH ABDOMINAL STERNITE ( Fig. 15C ). Anterolateral rib thin, forked basally, reaching before posterior margin of sixth abdominal sternite; posterolateral lobe weakly sclerotized, triangular.

Female

Unknown.

Distribution

China (Yunnan).

Figures

Fig. 1. Adults of species of Lecithocera Herrich-Schäffer, 1853 (NKU), dorsal view. A. L. alpestra Park, 2005, male. B. L. alpina Park, 2016, male. C. L. angustifolia sp. nov., holotype, male. D. L. asticta sp. nov., holotype, male. E. L. balteiformis sp. nov., holotype, male. F. L. bicornuta sp. nov., paratype, male. Scale bars=2.0 mm.

Fig. 6. Wing venations of species of Lecithocera Herrich-Schäffer, 1853, all paratypes (NKU). A. L. angustifolia sp. nov., male, slide no. YS19608. B. L. asticta sp. nov., male, slide no. YS20005. C. L. balteiformis sp. nov., male, slide no. YS18197. D. L. bicornuta sp. nov., male, slide no. YS19610. E. L. bigeminata sp. nov., male, slide no. YS20003. F. L. duplicispinea sp. nov., female, slide no. ZMR10313. Scale bars =2.0 mm.

Fig. 10. Male genitalia of species of Lecithocera Herrich-Schäffer, 1853 (NKU). A. L. alpestra Park, 2005, slide no. YS19101. B. L. alpina Park, 2016, slide no. YS19008. C. L. angustifolia sp. nov., holotype, slide no. YS19607. D. L. asticta sp. nov., holotype, slide no. YS19603. E. L. balteiformis sp. nov., holotype, slide no. LSR13346. F. L. bicornuta sp. nov., holotype, slide no. YS19614. Scale bars =0.5 mm.

Fig. 15. Male seventh abdominal sternite of species of Lecithocera Herrich-Schäffer, 1853 (NKU). A. L. alpestra Park, 2005, slide no. YS19101. B. L. alpina Park, 2016, slide no. YS19008. C. L. angustifolia sp. nov., holotype, slide no. YS19607. D. L. asticta sp. nov., holotype, slide no. YS19603. E. L. balteiformis sp. nov., holotype, slide no. LSR13346. F. L. bicornuta sp. nov., holotype, slide no. YS19614. G. L. bigeminata sp. nov., paratype, slide no. LSR13407. H. L. chersitis Meyrick, 1918, slide no.YS19635.I. L. duplicispinea sp. nov., paratype, slide no. ZYM06270. Scale bars =0.5 mm.