Promalactis lianhuashana, Wang & Liu, 2021

Promalactis lianhuashana sp. nov.

( Figs 11 View FIGURES 9‒16 , 33 View FIGURES 29‒34 )

Type material. CHINA, Guangxi: Holotype ♂, Mt. Lianhua, Jinxiu , 1000 m, 22.VII.2015, leg. MJ Qi & SN Zhao, slide No. JYY17753.

Diagnosis. The new species can be distinguished by features of the male genitalia, including the asymmetrical valva with a large dorsoapical process that is curved before the middle by an acute angle and has a large basal process, and the juxta with a spine extending left from the posterior angle.

Description. Adult ( Fig. 11 View FIGURES 9‒16 ). Forewing length 4.5 mm.

Head: Vertex white, frons pale silvery grey, occiput rust brown. Labial palpus with second palpomere yellowish brown; third palpomere black except white at base and apex. Antenna with scape white dorsally, black ventrally; flagellum black alternated with white on dorsal surface, brown on ventral surface.

Thorax: Dorsum of mesothorax and tegula rust brown. Forewing rust brown; markings white edged with black scales: costal spot sub-rectangular, extending to above posterior angle of cell; basal streak slender, extending obliquely inward to base of fold; antemedian streak from dorsal 2/5 extending obliquely outward to basal 2/5 of cell, slightly widened anteriorly; dorsal streak from basal 3/4 extending obliquely outward to distal 1/5 of posterior angle of cell; pretornal spot small; apical and terminal spots elongate ovate; fringe yellow. Hindwing and fringe grey. Fore- and midlegs greyish white on dorsal surface, black on ventral surface, except tibiae with white spot at base and middle, with a tuft of short white scales at apex, tarsi white at apices of basal two tarsomeres; hindleg blackish brown except tarsus white at apex of each tarsomere on outer surface.

Abdomen: Male genitalia ( Fig. 33 View FIGURES 29‒34 ). Uncus inverted vaselike, basal half wide, margins subparallel, narrowed from middle to basal 3/4, thereafter widened to straight apex. Gnathos as long as uncus; mesial plate wide and parallel basally, narrowed to rounded apex, granulate distally; basal arm shorter than mesial plate. Tegumen with lateral arms sub-rectangular. Valvae sub-trapezoidal, costal margin shorter than ventral margin; asymmetrical: left valva with a C-shaped emargination at apex, right-angled dorsoapically; sacculus wide at base, narrowed to before middle, then uniformly narrow to apex, setose distally, with a short apical spine directed dorsad; right valva with a large dorsodistal process directed dorsad, which is wide at base, narrowed to before middle, distinctly curved at middle, then extending horizontally outward and covered with a bunch of numerous spines in distal half, with a large flap arising from between base and basal 2/5 along midline of above-mentioned process, which is narrowed to broadly rounded apex and has fine spines distally; sacculus wide at base, slightly narrowed to apex, setose distally, with a denticle dorsoapically. Saccus triangular, narrowly rounded at apex, 2/3 length of uncus. Juxta an irregular plate, narrow at base, widened to apex, with a spine arising from left posterolateral angle; basal lobe clubbed, as long as juxta plate. Aedeagus slender, longer than valva; cornutus absent.

Female. Unknown.

Distribution. China ( Guangxi).

Etymology. The specific epithet refers to the type locality, Jinxiu, Guangxi.