Irepacma tengchongensis 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 : 42-43

Irepacma tengchongensis Wang , sp. nov.

( Figs 8 , 16 , 19 )

Type material. CHINA, Yunnan: Holotype ♁, Xiaodifangxin Village (24.87°N, 98.75°E), Tengchong , 2116 m, 12.VIII.2014, leg. KJ Teng et al., slide No. XZX20516.

Paratypes: 1♁ 4♀, same data as holotype, slide Nos. XZX20515♁, XZX20517 ♀, XZX20649 ♀.

Diagnosis. The new species can be distinguished from its close allies by the asymmetrical dorso-proximal processes of the costa and the aedeagus evenly serrate on one margin distally.

Description. Adult ( Fig. 8 ). Wingspan 14.0 – 18.0 mm.

Head yellow. Labial palpus in male yellow, second palpomere with black scales near apex on ventral surface; in female, second palpomere black at apex. Antenna yellow; scape black at base, flagellum ringed with black on dorsal surface.

Thorax. Mesonotum and tegula black basally, yellow distally. Forewing yellow, with yellowish brown scales; costal margin with a rectangular black speckle along basal 1/3, with a large black spot beyond distal 1/3; tornal spot black; in male costal and tornal spots diffused and forming a large blotch that extends inward medially; discal, discocellular and plical stigmata black; terminal dots black; fringe yellow along termen, black around tornus. Hindwing deep gray; fringe gray basally, yellow distally. Legs yellow with exceptions on ventral surface: femur of foreleg black, tarsus with fifth tarsomere black, tarsus of midleg black at base of first, second as well as third tarsomeres and on entire fifth tarsomere, tibiae of fore- and midlegs black, ringed yellow at middle and apex; on outer surface: tibia of hindleg black, ringed with yellow at middle and apex, tarsus black at base of each tarsomere.

Male genitalia ( Fig. 16 ). Uncus sublanceolate, narrowed from base to basal 1/5, then widened to basal 2/3, finally narrowed to obtusely rounded apex; with a long seta at basal 1/4 laterally. Gnathos with basal arm banded, shorter than half length of ventral plate; ventral plate axe-shaped, wider than long, obtusely rounded at apex. Tegumen narrowed medially; lateral arm elongate, widened to obtuse apex. Valva wide at base, gradually narrowed to basal 1/3, then widened to near obtusely rounded apex, with dense setae in distal half; costa banded, reaching about basal 2/3 length of costal margin; dorso-proximal processes asymmetrical: left process slightly shorter than half length of valva, subrectangular, rounded at apex, with small triangular process before dorso-distal 1/3, with small teeth and wrinkles dorso-distally; right process subtriangular, about 1/6 length of valva. Sacculus shorter than half length of valva, narrowed to rounded apex, folded ventrobasally. Saccus triangular. Aedeagus approximately 2/3 length of valva, gradually widened to basal 1/3, distal 2/3 uniformly wide, serrate on one margin.

Female genitalia ( Fig. 19 ). Papilla analis bell-shaped, setose. Eighth sternal plate with long setae at middle on posterior margin. Antrum wider than long, arched laterally, produced to triangular posterolateral process narrowed obliquely outward to pointed apex. Ductus bursae shorter than corpus bursae, with dense granules. Corpus bursae subelliptical, not well separated from ductus bursae.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from the type locality, Tengchong, Yunnan Province.

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 13–16. Male genitalia of Irepacma spp. 13, I. longiflagellata sp. nov.; 14, I. rotunda sp. nov.; 15, I. spiculosa sp. nov.; 16, I. tengchongensis 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.