Locheutis similempolaea Wang, sp. nov.

(Figs 5, 10)

urn:lsid:zoobank.org:act: B68E87D8-C81A-4F23-9C51-BFAF500A9868

Type material. CHINA, Guangxi: Holotype ♂, Jiuniutang, Mt. Mao′er, Guilin, 1016 m, 24.VII.2015, leg. MJ Qi & SN Zhao, slide No. TZL19807. Paratypes. Guangxi: 2♂, same data as holotype, slides No. TZL19692; 1♂, Mt. Mao′er, Guilin, 1200 m, 23.VII.2015, leg. KL Liu & JX Zhao, slide No. TZL19695; 1♂, Jiuniutang, Mt. Mao′er, Guilin, 1219 m, 15.VIII.2020, leg. H Sun et al., slide No. TZL19698; Hunan: 10♂, Zhangjiajie, 7–11.VIII.2001, leg. HH Li & XP Wang, slide Nos. TZL19670, TZL19683, TZL19682; 1♂, Mt. Badagong, Sangzhi, 1250 m, 12.VIII.2001, leg. HH Li & XP Wang; Guizhou: 1♂, Huguosi, Mt. Fanjing, 1300 m, 2.VIII.2001, leg. HH Li & XP Wang, slide No. TZL19697.

Diagnosis. The new species is similar to L. empolaea Meyrick, 1914 in the male genitalia. It can be distinguished by the costal part of the valva with basal 2/3 uniformly wide and distal 1/3 narrowed to apex, and the saccular part of the valva with ventral margin sinuate in basal half and concave inward in middle; in L. empolaea, the costal part of the valva is gradually narrowed from base to apex, and the saccular part of the valva is obliquely straight in basal 2/3 on the ventral margin (Clarke 1963: pl. 151, fig. 2).

Description. Adult (Fig. 5). Wingspan 14.0–18.0 mm. Head brown, with purplish sheen. Antenna with scape dark brown; flagellum yellow, ringed with brown on dorsal surface. Labial palpus with second palpomere yellowish brown on inner surface, brown on outer surface; third palpomere brown except yellow at apex. Thorax and tegula greyish brown basally, light yellowish distally. Forewing yellow; costal margin blackish brown on basal 2/9, forming an ill-defined large basal patch, with a diffused blackish brown spot beyond distal 1/3; discal, discocellular and plical spots blackish brown, discocellular spot transversely sub-rectangular, largest, divided into two small dots by mesial interruption, plical spot rounded, smallest; tornal spot blackish brown, rounded, diffused; subterminal fascia yellowish brown, from beyond distal 1/3 of costal margin extending inward to tornus; terminal dots blackish brown, running from preapex along termen to tornus; fringe yellow. Hindwing and fringe greyish brown. Fore- and midlegs dark brown on dorsal surface, yellow mixed with grey on ventral surface; hindleg yellow, in some individuals mixed with brown scales on outer surface, black at each tarsomere basally; inner spurs yellow mixed with brown, outer spurs brown.

Male genitalia (Fig. 10): Tegumen arched, widened medially, obtusely rounded on posterior margin, lateral part narrow. Gnathos transversely banded, dumbbell-like, uniformly narrow and straight medially, ovately dilated laterally. Costal part of valva with basal 2/3 uniformly wide, distal 1/3 narrowed to pointed apex, densely setose; saccular part of valva wide at base, distinctly narrowed to before middle, shrunk medially, elliptically dilated and setose distally, rounded apically; dorsal margin straight; ventral margin sinuate in basal half, concave inward medially. Juxta rectangular; anterior margin narrowly sclerotized, obtuse, with a notch in middle; lateral margin heavily sclerotized, straight, dilated distally, club-like as a whole. Aedeagus straight, longer than saccular part of valva, with dense denticles and granules; cornuti consisting of two shorter stout spines and a large bundle of slender, easily shed spines running from basal 1/4 to distal 1/4 (Fig. 10a).

Female unknown.

Distribution. China (Guangxi, Guizhou, Hunan).

Etymology. The specific epithet is derived from the Latin similis meaning similar, and the specific name of its closely allied species empolaea.