Promalactis longimaculata Wang, 2017

Hu, Sha & Wang, Shuxia, 2017, Taxonomic study of the genus Promalactis Meyrick (Lepidoptera, Oecophoridae) from Hainan Island, China (III), Zootaxa 4303 (4), pp. 590-600 : 597

Promalactis longimaculata Wang , sp. nov.

( Figs. 7 , 15 , 18 )

Type material. CHINA, Hainan Island: Holotype ♂, Tianchi (18.44°N, 108.52°E), 787 m, Jianfengling, 7.III.2016, coll. Qingyun Wang, Suran Li & Menting Chen. Paratypes: 1♀, same data as holotype except dated 16.VII.2015, slide No. HS 15226 ♀ ; 2♂, 15.VII.2014, 2♀, 29−30.VII.2014, Jianfengling Nature Reserves (18.74°N, 108.87°E), 770 m, coll. Peixin Cong, Linjie Liu & Sha Hu, slide Nos. HS 15078 ♂, HS15100 ♂, HS19217 ♀, HS15219 ♀ .

Diagnosis. This species can be easily distinguished from its congeners by the forewing having a large black elongate triangular blotch, and by the costa with the distal half distinctly widened to apex in the male genitalia.

Description. Adult ( Fig. 7 ) wingspan 6.5 mm. Head with frons and vertex pale ochreous yellow mixed with ochreous brown, occiput ochreous yellow. Labial palpus with second segment brown mixed with black on basal half, white on distal half except brown at apex; third segment blackish brown except white at base and apex. Antenna with scape pale ochreous yellow tinged with blackish brown, flagellum alternately pale ochreous yellow and black. Thorax and tegula blackish brown. Forewing with a large elongate triangular black blotch extending from base to costal 2/3, its posterior margin obliquely sinuate from near base of dorsum to costal 2/3, edged with white; dorsum with an obscure blackish brown band extending to dorsal 2/5, forming a fork with large black blotch; remaining part ochreous yellow, with scattered black scales running along termen to tornus; distal patch black, with a creamy yellow apical spot; cilia yellow. Hindwing and cilia grayish brown. Legs with femora yellow mixed with black, tibiae brown ventrally, black marked with white dorsally, tarsi black with white at apex of each tarsomere.

Male genitalia ( Fig. 15 ). Uncus with basal 3/4 uniformly broad, distal 1/4 narrowed to pointed apex. Gnathos weakly sclerotized, narrowly rounded at apex. Valva sub-rectangular, rounded at apex; costa slightly convex, basal half narrow and uniform, distal half gradually widened to truncate apex, apex with two denticles dorsoapically, triangularly protruded ventroapically; sacculus wide at base, slightly narrowed to basal 2/5, distal 3/5 ill-defined, bearing sparse long setae. Saccus broad at base, sharply narrowed to pointed apex, shorter than uncus. Juxta with lateral lobes elongate elliptical; basal lobe slender, about 3/4 length of saccus. Aedeagus slightly shorter than valva, straight, basal half aequilate, distal half slightly thickened; cornutus spine-shaped, obliquely truncate at base, about 1/6 length of aedeagus, placed distally.

Female genitalia ( Fig. 18 ). Apophyses anteriores strong, about 5/8 length of apophyses posteriores. Ostium bursae very large; lamella postvaginalis sub-elliptical, deeply concave in tongue shape from middle on posterior margin to anterior margin of ostium bursae. Antrum short, funneled. Ductus bursae slender, slightly widened beyond basal 2/3. Corpus bursae ovate, granulate; with two large elliptical signa, bearing dense triangular denticles.

Distribution. China (Hainan).

Etymology. The species epithet is derived from the Latin longi- and maculatus, referring to the black elongate triangular blotch in the forewing.

Figures

FIGURES 1 – 8. Adults of Promalactis spp. 1, P. anterodilata sp. nov., paratype, male; 2, P. bitriangula sp. nov., holotype, male; 3, P. longiprocessa sp. nov., holotype, male; 4, P. tenuivalvata sp. nov., holotype, male; 5, P. unifurcata sp. nov., holotype, male; 6, P. apicifurcata sp. nov., holotype, male; 7, P. longimaculata sp. nov., holotype, male; 8, P. serrata, Du, Li & Wang, male. Scale bars: 1.0 mm.

FIGURES 13 – 15. Male genitalia of Promalactis spp. 13 a – b, P. unifurcata sp. nov., slide Nos.: a, holotype, HS 15073, b, paratype, HS 15189; 14 a – b, P. apicifurcata sp. nov., slide Nos.: a, paratype, HS 15201, b, paratype, HS 15077; 15, P. longimaculata sp. nov., paratype, slide No. HS 15078. Scale bars: 0.2 mm.

FIGURES 16 – 19. Female genitalia of Promalactis spp. 16, P. anterodilata sp. nov., paratype, slide No. HS 15209; 17, P. unifurcata sp. nov., paratype, slide No. HS 15191; 18, P. longimaculata sp. nov., paratype, slide No. HS 152; 19, P. serrata, Du, Li & Wang, slide No. HS 14114. Scale bars: 0.2 mm.