Description of twelve new species of the genus Ripeacma Moriuti, Saito & Lewvanich (Lepidoptera: Autostichidae) from China Author Xu, Zhixin 0000-0001-6851-8234 College of Life Sciences, Nankai University, Tianjin 300071, China & xuzhixin 8848 @ 126. com; https: // orcid. org / 0000 - 0001 - 6851 - 8234 Author Wang, Shuxia 0000-0002-9316-6661 College of Life Sciences, Nankai University, Tianjin 300071, China & shxwang @ nankai. edu. cn; https: // orcid. org / 0000 - 0002 - 9316 - 6661 shxwang@nankai.edu.cn text Zootaxa 2022 2022-07-26 5168 5 521 540 journal article 107001 10.11646/zootaxa.5168.5.2 3a83fba1-20b2-42c1-b516-659ca5b64501 1175-5326 6911445 F0B8BD09-854A-4D53-BC9A-FE106F18D525 Ripeacma apicilispina Wang , sp. nov. ( Figs 4 , 16 ) Type material. CHINA , Hubei : Holotype ♂ , Quanxi Town ( 32.03°N 109.69°E ), Zhuxi County , 868 m , 9.VII.2017 , leg. WD Qi et al. , slide No. XZX20323. Diagnosis. The new species is similar to R. bicruris Wang & Li, 2003 in male genitalia. It can be distinguished by the broad triangular saccus, and the aedeagus has an apical spine. In R. bicruris , the slender saccus is sub-digitate, and the distally bilobed aedeagus lacks an apical spine. Description. Adult ( Fig. 4 ). Wingspan 10.0 mm. Head pale yellow, vertex mixed with black scales. Labial palpus in male yellow, second palpomere with black scales distally. Antenna yellow; flagellum ringed with brown on dorsal surface. Thorax and tegula black basally, yellow distally. Forewing yellow, with black scales; costal margin dark brown from base to basal 1/3, forming a dark band widened toward apex, diffused dark brown spot from between basal 2/5 and distal 1/3 to anterior margin of cell, darker at each side, three small dark brown dots in distal 1/4; terminal dots black, running along termen to tornus; discal, discocellular and plical stigmata black, discocellular stigma doubled, closely placed one above the other; dorsum with a black spot at base; fringe yellow, except on extension of black marginal dots. Hindwing and fringe dark brown. Legs yellow; on dorsal surface, femur of foreleg black, tibia black, ringed with yellow at basal 1/3, at middle and at apex, tarsus black at middle of first tarsomere and at base of second tarsomere as well as on entire third and fourth tarsomeres; tibia of midleg black, with yellow speckle at basal 1/3, at middle and at apex, tarsus black at middle of first tarsomere and at base of other tarsomeres; femur of hindleg with black scales, on outer surface, tibia of hindleg black, tarsus black at middle of first tarsomere and at base of second tarsomere. Male genitalia ( Fig. 16 ). Uncus sub-trapezoidal, shrunk near apex laterally, mushroom-like apically, with a few setae beyond middle laterally. Gnathos with ventral plate horizontally straight, narrowly banded, slightly widened anteriorly, pointed at each tip; basal arm banded, as long as width of ventral plate. Tegumen quadrate posteriorly, with a semicircular anterior emargination; lateral arm shorter than median width. Valva narrowly elongate, slightly widened from near base to before obtusely rounded apex, with setae from basal 1/5 to 1/2 above ventral margin; costa narrowly banded, reaching beyond middle of costal margin; transtilla lobes expanded near middle, weakly joined mesially; sacculus triangular, with sparse long setae at apex. Saccus triangular, apex narrowly rounded. Juxta U shaped; lateral lobes broadly banded, slightly narrowed to finely serrate apex. Aedeagus as long as valva, with an apical spine. Female unknown. Distribution. China ( Hubei ). Etymology. The specific epithet is derived from the Latin apicalis and s pina, referring to the apical spine of the aedeagus.