Taxonomy of the genus Autosticha Meyrick (Lepidoptera: Autostichidae) in China Descriptions of fifteen new species Author Tao, Zhulin 0000-0001-8519-6521 College of Life Sciences, Nankai University, Tianjin 300071, China & tzl 2550993788 @ 163. com; https: // orcid. org / 0000 - 0001 - 8519 - 6521 Author Wang, Yuqi College of Life Sciences, Nankai University, Tianjin 300071, China & wangyuqi 2012 nankai @ 126. com; Author Wang, Shuxia College of Life Sciences, Nankai University, Tianjin 300071, China text Zootaxa 2021 2021-10-07 5048 3 347 370 journal article 4056 10.11646/zootaxa.5048.3.3 46a4213a-dc51-40d0-95a3-b816c3e9fe51 1175-5326 5556409 A9DC7F8C-474C-4C30-9CB6-10AB3836715D Autosticha rhombea S. Wang , sp. nov. ( Figs 4 , 18 ) urn:lsid:zoobank.org:act: 82DB4949-D64B-4B47-BBEA-6347956C6FF2 Type material. CHINA , Yunnan : Holotype ♂ , Botanical Garden ( 21.6ºN , 101.59ºE ), 1000 m , 7.VIII.2005 , leg. YD Ren , slide No. WYQ13123 . Paratypes : 1♂ , 5.VIII.2005 , other same data as holotype, slide No. WYQ16458 ; 1♂ , Bubang , Mengla , 650 m , 23.VIII.2005 , leg. YD Ren , slide No. WYQ13127 ; 2♂ , Xishuangbanna , Bubang , 656 m , 23−24.VII.2014 , leg. KJ Teng et al., slide Nos. WYQ14120, WYQ14123 . Diagnosis . The new species is similar to A. hainanica Park et Wu, 2003 in the shape of the valva in male genitalia. It can be distinguished by the sacculus without a process, the rhombic juxta, and the aedeagus with a stout spine-shaped process near its apex. In A. hainanica , the sacculus has a process on the dorsal margin, the juxta is semielliptical, and the aedeagus lacks a process. Description. Adult ( Fig. 4 ). Forewing length 5.7−6.5 mm . Head yellow mixed with dark brown scales. Antenna: scape dark brown; flagellum yellow, annulated with dark brown on dorsal surface. Labial palpus with second palpomere pale yellow on inner surface except dark brown at apex, outer surface greyish brown; third palpomere yellow. Thorax and tegula dark brown, mixed with yellow scales. Forewing ground color yellow, with brown scales throughout, with dense black scales at apex; costal margin dark brown along basal half, with three evenly spaced dark brown dots in distal 1/3; black spot placed near base of subcostal margin, at base of fold and near base of dorsum respectively; discal, discocellular and plical spots black, discocellular spot largest; fringe yellow, tinged with dark brown. Hindwing and fringe brown, fringe with a pale yellow basal line. Fore- and midlegs with femora greyish white on ventral surface, deep grey on dorsal surface, tibiae and tarsi dark brown on dorsal surface, yellow on ventral surface; hindleg yellow, tibia with dense dark brown scales on outer surface, pale yellow at apex of each tarsomere. Male genitalia ( Fig. 18 ). Uncus broadly spatulate, basal half parallel-sided laterally, distal half dilated, rounded at apex. Gnathos with mesial plate distinctly extended, pointed at apex; lateral arms narrowly banded, about three times length of mesial plate. Tegumen with posterior 1/3 trapezoidal, shallowly concave at middle on anterior margin; lateral arm narrowly banded. Valva narrow at base, slightly widened to about middle, greatly shrunk beyond basal 2/5 from ventral margin, forming a large trapezoidal concavity, distal 1/4 dilated, asymmetrical: left side subrectangular, straight on ventral margin, right side wider, triangularly produced ventrally; costal margin with basal half strongly sclerotized, irregularly banded; sacculus widened to basal 3/5 of valva, right-angled ventroapically, straight apically, setose distally. Saccus shorter than uncus, narrowed to middle, distal half digitate. Juxta rhombical. Aedeagus about 2/3 length of valva, with a spine-shaped process at preapex ( Fig. 18b ); cornuti consisting of some clustered spines ( Fig. 18a ). Female unknown. Distribution. China ( Yunnan ). Etymology. The specific epithet of the new species is derived from the Latin rhombeus , referring to the shape of the juxta in the male genitalia.