Promalactis longiprocessa 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 : 593-594

Promalactis longiprocessa Wang , sp. nov.

( Figs. 3 , 11 )

Type material. CHINA, Hainan Island: Holotype ♂, Yuanmen (19.40°N, 109.31°E), 445 m, Baisha County, 31.VII.2015, coll. Qingyun Wang, Suran Li & Mengting Chen, slide No. HS 15213. Paratypes: 2♂, Yuanmen (19.07°N, 109.52°E), 460 m, Baisha County , 2.VII.2014, coll. Peixin Cong, Linjie Liu & Sha Hu, slide Nos. HS 15136 ♂, HS14160 ♂ ; 1♂, Shuiman (18.53°N, 109.40°E), 766 m, Mt. Wuzhi , 6.VII.2015, coll. Qingyun Wang, Suran Li & Mengting Chen, slide No. HS 15203 ♂ .

Diagnosis. This new species is externally similar to P. isodora Meyrick, 1908 , P. punctuata Wang, 2006 , P. epistacta Meyrick, 1908 , and P. palmata Du & Wang, 2011 , with which it shares a similar forewing pattern. It can be distinguised by having a long and strong costal process that exceeds the apex of the valva in the male genitalia, which is absent in P. isodora and is far from reaching the apex of the valva in other three species.

Description. Adult ( Fig. 3 ) wingspan 8.0–10.0 mm. Head with vertex and occiput grayish black, frons ochreous yellow. Labial palpus with second segment blackish brown, third segment blackish brown except white at base and apex. Antenna with scape blackish brown, bearing a dorsal silvery white spot at base; flagellum black on ventral surface, black ringed with silvery white on dorsal surface. Thorax ferruginous; tegula ochreous brown. Forewing ochreous yellow, with 16 to 17 silvery white speckles surrounded by black scales; costal margin with a large ochreous brown quadrangular spot before middle, beyond it set a sub-rounded white spot, with a black subtriangular spot at costal 3/4 diffused to ventral corner of termen; fold with a small white spot at base, with an indistinct white dot at end; four white spots equidistantly spaced from near base along lower margin to lower angle of cell, another white spot at end of cell; four equidistantly spaced fine white streaks situated between fold and dorsum, oblique and parallel outward, second streak L-shaped; distal 1/4 with two white spots along costal margin and two along termen, with a larger white spot at apex; tornal spot ochreous brown, mixed with black scales and tinged with white; cilia yellow, sparsely tinged with black-tipped scales along dorsal margin. Hindwing and cilia brown. Foreleg black, tibia and tarsus marked with white on dorsal surface; midleg with femur yellow, tibia and tarsus blackish brown with white stripes dorsally; hindleg with femur yellow, tibia brown, tarsus with basal tarsomere blackish brown, distal tarsomere white, median three tarsomeres white on basal half, blackish brown on distal half.

Male genitalia ( Fig. 11 ). Uncus broad, parallel laterally in basal half, narrowed from middle to 4/5, digitiform in distal 1/5, bearing sparse setae. Gnathos elongate, tongue-shaped, granulate distally, approximately same length as uncus. Tegumen branched from middle, narrowd anteriorly. Valva with basal half aequilate, distal half triangular, narrowed distinctly to pointed apex; costa slightly concave near base, with a strong free process arising from approximately 2/5, gradually narrowed to acute apex, curved ventrad from before apex, exceeding apex of valva; sacculus broad at base, narrowed to middle, shallowly concave beyond middle, distal half narrower. Saccus broad triangular, slightly narrowed to rounded apex, approximately same length as uncus. Juxta separated from base, apically pointed, exceeding base of uncus; left lobe longer and stronger than right lobe; basal lobe short, stout, reaching proximately posterior 1/4 of saccus. Aedeagus slightly dilated at base, apically produced to a sclerotized band-like plate; cornutus at middle of aedeagus, fasciculate, formed by spines of different length.

Female unknown.

Distribution. China (Hainan).

Etymology. The specific epithet is derived from the Latin longi - and processus, referring to the long and slender process of the costa.

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 9 – 12. Male genitalia of Promalactis spp. 9, P. anterodilata sp. nov., paratype, slide No. HS 16019; 10, P. bitriangula sp. nov., paratype, slide No. HS 15067; 11, P. longiprocessa sp. nov., paratype, slide No. HS 14160; 12, P. tenuivalvata sp. nov., holotype, slide No. HS 15192. Scale bars: 0.2 mm.