Promalactis latispinata Wang, 2020

Wang, Shuxia & Liu, Chen, 2020, Taxonomic study of the genus Promalactis Meyrick, 1908 (Lepidoptera: Oecophoridae) IX. The maculosa species-group, with descriptions of eighteen new species, Zootaxa 4890 (1), pp. 38-66 : 42-43

Promalactis latispinata Wang , sp. nov.

( Figs 4 , 22 )

Type material. CHINA, Guizhou: Holotype ♂, Fangxiang Town (26.44°N, 108.27°E), Mt. Leigong , 910 m, 4.VIII.2018, leg. ML Zheng et al., slide No. LC19215.

Diagnosis. This species can be distinguished from its congeners in male genitalia by the costa having a digitate process at distal 2/5, the juxta with a large spine at basal 2/3 on the outer margin of the arched lateral arm, and the aedeagus with a cornutus bearing several small spines in the middle.

Description. Adult ( Fig. 4 ). Wingspan 10.0 mm. Head dark grey. Labial palpus with second segment grey on inner surface, yellowish brown mottled with black scales on outer surface; third segment black except white basally and apically. Antenna with scape white dorsally, grey ventrally; flagellum black, alternated with white on dorsal surface. Thorax and tegula dark grey on basal half, yellowish brown on distal half. Forewing ochreous yellow; markings white edged with black scales: costal spot beyond middle, narrowed obliquely outward to posterior angle of cell, with a large diffused black patch on both inner and outer margins anteriorly; cell with a spot before basal 1/3; fold with a fine stripe at base, with a larger round spot at middle and before distal 1/4 respectively; dorsum with three white streaks evenly spaced, outermost one oblique outward to fold; apical spot ovate, with diffused black scales on inner margin; terminal spot smaller, near apical spot; tornus with diffused black scales, forming an ill-defined patch; cilia yellow. Hindwing and cilia grey. Fore- and midlegs black, fore femur and midleg greyish brown ventrally, tibiae with a white spot basally and medially, with a tuft of white scales apically, tarsi white at apices of basal two tarsomeres, apical tarsomere of midleg white; hindleg brown ventrally, grey dorsally, tarsus white at apices of basal four tarsomeres and on entire apical tarsomere.

Male genitalia ( Fig. 22 ). Uncus wide at base, narrowed to basal 2/5, then narrowed to rounded apex. Gnathos slightly shorter than uncus; mesial plate elongate rectangular, sclerotized laterally, obtuse at apex, with an apical process; basal arm shorter than mesial plate. Tegumen widened to posterior 3/5, then divided; lateral arm narrowed to obtuse apex. Valva wide at base, narrowed to rounded apex; costa arched basally, with a straight digitate process slightly oblique outward at distal 2/5, with fine teeth from beyond this process; sacculus wide at base, narrowed to beyond basal 2/3, then widened and setose to apex. Saccus as long as uncus, narrowed to rounded apex. Juxta narrowly connected basally; lateral arm stout, narrow at base, widened obliquely outward to basal 2/3, then arched and narrowed inward to apex, not exceeding costa of valva, with a large spine at basal 2/3 on outer margin. Aedeagus stout, shorter than valva; apex straight, with a hooked process; cornutus a long spine, 2/3 length of aedeagus, bearing several small spines in middle.

Female unknown.

Distribution. China (Guizhou).

Etymology. The specific epithet of the new species is derived from the Latin lati- and spinatus, referring to the spine on the outer margin of the juxta lateral arm.

Figures

FIGURES 1‒6. Adults of Promalactis spp. 1, P. coloristigmosa, paratype, ♂; 2, P. cruciate, holotype, ♂; 3, P. lateridentalis, holotype, ♂; 4, P. latispinata, holotype, ♂; 5, P. lonchodes, holotype, ♂; 6, P. magnispina, holotype, ♂. Scales = 2 mm.

FIGURES 19‒24. Male genitalia of Promalactis spp. 19, P. coloristigmosa, holotype, slide No. JYY17711, 19a, enlarged cornu- tus, slide No. JYY17804; 20, P. cruciate, holotype, slide No. HXM14127; 21, P. lateridentalis, holotype, slide No. JYY17706; 22, P. latispinata, holotype, slide No. LC19215, 22a, enlarged cornutus; 23, P. lonchodes, holotype, slide No. JYY17733, 23a, enlarged cornutus, slide No. JYY17725; 24, P. magnispina, holotype, slide No. JYY17718. Scales = 0.2 mm.