Irepacma denticulata Wang, 2022

Wang, Shuxia, Xu, Zhixin & Li, Suran, 2022, Description of eight new species of the genus Irepacma Moriuti, Saito & Lewvanich (Lepidoptera: Autostichidae) from China, Zootaxa 5222 (1), pp. 37-48 : 39-40

Irepacma denticulata Wang , sp. nov.

( Figs 3 , 11 , 18 )

Type material. Holotype ♁, Yunnan: Yexianggu (22.17°N, 100.87°E), 762 m, 11.VII.2015, leg. KJ Teng & X Bai, slide No. XZX20537.

Paratypes: Yunnan: 6♀ , same data as holotype except dated 8, 11–12.VII.2015, slide Nos. TZL21047, TZL21048; 28 ♁ 5♀,Yexianggu, Xishuangbanna, 762 m, 17–20.VII.2014, leg. KJ Teng et al., slide Nos.LiSR17015♁, TZL20631♁, XZX20538 ♀.

Diagnosis. The new species can be distinguished from its congeners in the male genitalia by the costa of the valva bearing a conspicuous horn-shaped process at basal 1/3, the sacculus bifurcated from its half, and the distally dilated aedeagus with a denticle near apex.

Description. Adult ( Fig. 3 ). Wingspan 9.5 – 14.5 mm.

Head pale yellow. Labial palpus pale yellow. Antenna yellow, with yellowish brown rings.

Thorax. Mesonotum and tegula pale yellow. Forewing pale yellow; discal, discocellular and plical stigmata small, brown; fringe pale yellow. Hindwing and fringe pale yellow. Foreleg yellow, except on dorsal surface femur with scattered blackish brown scales, tibia and tarsus blackish brown; mid- and hindlegs pale yellow.

Male genitalia ( Fig.11 ).Uncus wide at base,narrower medially,slightly dilated distally,sclerotized mediolaterally, apex rounded. Gnathos with basal arm narrowed to ventral plate; ventral plate transversely subovate, with dense fine spines along apical margin. Valva subrectangular, triangularly produced at basal 3/5 of costal margin, apex rounded; ventral margin almost straight, with fine setae distally; costa reaching 1/3 length of costal margin, with triangular process near base and horn-shaped process at its end. Sacculus with basal half broad, bifurcate from its half, forming two distal processes: dorsal process slender, sclerotized, dilated distally, with denticles on apical margin; ventral process narrowed from base to pointed apex, with a line of spines along ventral margin distally. Saccus shorter than uncus, slightly narrowed to rounded apex. Juxta short, trapezoidal. Aedeagus longer than valva, rod-shaped in basal 1/3, abruptly widened at basal 1/3, thereafter narrowed to basal 3/5, slender from 3/5 to 5/6, dilated distally, with a denticle near apex.

Female genitalia ( Fig. 18 ). Papilla analis bell-shaped. Eighth sternal plate setose, obtusely rounded on posterior margin, with two eyebrow-like processes near posterior margin medially, with triangular sclerite posterolaterally; anterior margin shallowly concave, medially with bifurcate process from distal 3/5. Antrum expanded posteriorly, concave at middle on posterior margin, produced posterolaterally and forming small narrowing process. Ductus bursae sclerotized except membranous anteriorly. Corpus bursae ovate; signum subround, with denticles.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the Latin denticulatus, referring to the denticle near the apex of the aedeagus.

Figures

FIGURES 1–8. Adults of Irepacma spp. 1, I. bispicifera sp. nov.; 2, I. curticylindra sp. nov.; 3. I. denticulata sp. nov.; 4, I. flaviptera sp. nov. 5, I. longiflagellata sp. nov.; 6, I. rotunda sp. nov.; 7, I. spiculosa sp. nov.; 8, I. tengchongensis sp. nov. All holotypes. Scales = 2.0 mm.

FIGURES 9–12. Male genitalia of Irepacma spp. 9, I. bispicifera sp. nov.; 10, I. curticylindra sp. nov.; 11, I. denticulata sp. nov.; 12, I. flaviptera sp. nov. All holotypes. Scales = 0.5 mm.

FIGURES 17–19. Female genitalia of Irepacma spp. 17, I. curticylindra sp. nov., slide No. XZX20519. 18, I. denticulata sp. nov., slide No. XZX20538; 19, I. tengchongensis sp. nov., slide No. XZX20649. All paratypes. Scales = 0.5 mm.