Lecithocera furvibasis, Yu & Wang, 2024

Lecithocera furvibasis sp. nov.

urn:lsid:zoobank.org:act:

Figs 2F View Fig , 7C View Fig , 11F View Fig , 16C View Fig , 19B View Fig

Diagnosis

The new species is similar to L. castanoma Wu, 1997 and L. tumicuculla sp. nov. in the male genitalia by sharing a widened cucullus. The new species can be distinguished from the above mentioned species in appearance by the forewing having a triangular tornal streak, and in the female genitalia by the rounded signum of the corpus bursae lacking denticles and having a ridge. Lecithocera castanoma has no tornal streak (Park et al. 2016: 296, fig. 3) and L. tumicuculla sp. nov. has a uniformly narrow tornal streak on the forewing, and the ovate signum of the corpus bursae has dense denticles and lacks a ridge (Park et al. 2016: 300, fig. 33).

Etymology

The specific epithet is derived from the Latin “ furv -” and “ basis ”, referring to the forewing being dark brown basally.

Type material

Holotype

CHINA – Yunnan Province • ♂; Gaoligongshan ; 27º41′ N, 98º16′ E; 380 m a.s.l.; 28 May 2017; K.J. Teng leg.; slide no. YS18169 ; NKU. GoogleMaps

Paratypes ( 17 ♂♂, 27 ♀♀)

CHINA – Yunnan Province • 8 ♂♂, 20 ♀♀; same collection data as for holotype except 28–31 May 2017; slide nos YS18168 ♂, YS18170 ♂, YS18171 ♀, YS20004 ♀; NKU GoogleMaps . – Xizang Autonomous Region [Tibet] • 3 ♂♂, 3 ♀♀; Médog , 80 K; 2059 m a.s.l.; 7–8 and 19 Aug. 2017; M.J. Qi and X.F. Yang leg.; slide nos YS19069 ♂, YS19070 ♀; NKU • 1 ♂, 4 ♀♀; Médog , 80 K; 2076 m a.s.l.; 6–8 Aug. 2018; M.J. Qi leg.; NKU • 5 ♂♂; Bomi County, Yigong Country ; 2247 m a.s.l.; 5 Aug. 2017; M.J. Qi and X.F. Yang leg.; NKU .

Description

ADULT ( Figs 2F View Fig , 7C View Fig ). Wingspan 13.5–15.0 mm. Head dark brown except orange-yellow on frons and lateral sides. Antenna pale yellow. Labial palpus pale yellow on inner surface, dark yellowish brown on outer surface; third palpomere as long as second palpomere. Thorax and tegula dark brown. Forewing with costal margin slightly arched, apex blunt, termen oblique; ground colour orange white except dark brown basally; markings blackish brown: basal streak wide, about ¼ length of costal margin; discal stigma very small; discocellular stigma larger; tornal streak subtriangular, narrowed and meeting discocellular stigma anteriorly; fringe orange white; R 3 close to R 4+5 at base, R 4 and R 5 long-stalked, R 5 to costal margin before apex, M 2 and M 3 free, CuA 1 and CuA 2 short-stalked. Hindwing and fringe pale grey; fringe with orange white basal line; M 3 and CuA 1 coincident.

MALE GENITALIA ( Fig. 11F View Fig ). Uncus broadly V-shaped, rectangular anteriorly; caudal lobe digitiform, blunt apically. Gnathos with basal plate trapezoidal; median process broad at base, narrowed to distal ¼, then slender, curved ventrad in preapical sector by right angle. Valva broad at base, slightly narrowed to cucullus, ventral margin sinuate; cucullus about half length of valva, elliptical, widened medially, rounded apically, setose on ventral half; costal bar with basal half narrow, widened from middle toward valva, angled at middle; sacculus narrowly taenioid, about ¼ length of ventral margin of valva. Vinculum broad; saccus triangular. Juxta shield-shaped; posterior margin with small notch at middle; anterior margin with small triangular protrusion at middle; posterior lobe narrow taenioid, extending outward. Aedeagus slightly shorter than valva, broad at base, narrowed to basal ¼ where it is curved, then parallel-sided to before blunt apex, with one dorsal denticle, with dense granules in vesica; cornuti consisting of bundle of spines at basal ¼, bar about 2/5 length of aedeagus and rolled sclerite and band of spines distally.

SEVENTH ABDOMINAL STERNITE ( Fig. 16C View Fig ). Anterolateral rib forked basally, extending obliquely outward, not reaching posterior margin of sixth abdominal sternite; posterolateral lobe semiovate.

FEMALE GENITALIA ( Fig. 19B View Fig ). Eighth abdominal sternite arched on posterior margin. Apophyses posteriores about 5/3 as long as apophyses anteriores. Antrum cup-shaped, longer than wide, weakly sclerotized, spiculate. Ductus bursae longer than corpus bursae, broad except narrowed posteriorly, wrinkled; ductus seminalis arising from about middle, broadened basally forming sac, then much more slender. Corpus bursae ovate; signum situated posterior to middle, rounded, weakly sclerotized, with horizontal ridge at middle.

Distribution

China ( Yunnan, Xizang).