Study of the genus Meleonoma Meyrick, 1914 (Lepidoptera: Autostichidae) from China, with descriptions of twenty-one new species (II) Author Wang, Shuxia College of Life Sciences, Nankai University, Tianjin 300071, China Author Zhu, Xiaoju College of Life Sciences, Nankai University, Tianjin 300071, China & zxjyouxiang @ 126. com; https: // orcid. org / 0000 - 0002 - 4590 - 8480 text Zootaxa 2020 2020-11-19 4881 2 257 289 journal article 9530 10.11646/zootaxa.4881.2.3 33c0b2ac-f010-4b11-a819-0796497a6928 1175-5326 4283658 2F76CB59-C81F-4DE8-B05D-65FBAC889F73 Meleonoma taiwanensis sp. nov. ( Figs 24 , 46 , 56 ) urn:lsid:zoobank.org:act: 6EC0FE3A-E336-4C27-9FA2-C640119BB27D Type material. CHINA , Taiwan: Holotype ♂, Huisun Forest Park ( 23.96°N , 120.97°E ), Nantou County , 1100 m , 22–24.IV.1999 , leg. Mey & Ebert , slide No. MNHU-NK110 ( MNHU ) . Paratypes : 2♂ 3♀ , same data as holotype, slide No. MNHU-NK 111♀ ( MNHU ) . Diagnosis. The new species is similar to M . bifoliolata (Wang, 2006) in the forewing pattern. It can be distinguished in the male genitalia by the sacculus produced to a sub-triangular process dorsally, and the aedeagus with two stout spines at apex; and the lamella antevaginalis produced to a digitate process posterolaterally and longer than the antrum in the female genitalia. In M. bifoliolata , the sacculus has a sub-rounded process, and the aedeagus lacks spines at apex; and the lamella antevaginalis is produced to a digitate process posterolaterally and shorter than the antrum ( Wang 2006a: 16 , figs 8, 24). It is also similar to M . annulignatha sp. nov. , and the differences between them are stated in the diagnosis of the preceding species. Description. Adult ( Fig. 24 ). Forewing length 8.5‾9.0 mm. Head yellow, frons yellowish white. Labial palpus yellow; second segment with blackish-brown scales on distal 3/4; third segment slightly longer than half length of second segment, with a blackish-brown ring at distal 1/3. Antenna yellow; scape greyish brown basally; flagellum ringed with greyish black. Thorax and tegula greyish black. Forewing greyish black, with yellow spots beyond middle and at pre-apex of costal margin as well as at dorsum before tornus respectively. Legs yellow, tibiae and tarsi marked with blackish brown on outer surface; femur and coxa of foreleg blackish brown on ventral surface; femora of mid- and hindlegs tinged with blackish-brown scales on ventral surface. Male genitalia ( Fig. 46 ). Uncus wide at base, narrowed to basal 3/5, then parallel to before bifurcated apex, setose laterally. Gnathos nearly as long as uncus, weakly sclerotized; ventral plate widely banded; lateral arm wide basally, narrowed before middle, then evenly wide to ventral plate. Tegumen uniformly wide medially; lateral arm evenly narrow, narrower anteriorly. Valva isosceles triangular, parallel from base to before middle, narrowed from beyond middle to narrowly rounded apex, with dense setae; ventral margin triangularly produced medially; costa banded, straight, produced beyond apex, with a weakly sclerotized, widely banded process from about basal 1/3 extending inward. Sacculus sub-rectangular; apex concave medially, with sparse long setae, dorsoapically produced to an elongate sub-triangular process, ventroapically produced to a broad triangular process, shorter than dorsal process; ventral margin heavily sclerotized. Saccus wide at base, sub-parallel distally to pre-apex, rounded at apex. Aedeagus longer than valva, straightly stalagmitic, with two slender spines beyond middle laterally, several teeth at distal 1/3, two stout spines at apex. Female genitalia ( Fig. 56 ). Papillae anales sub-rectangular, with dense short setae on dorsal surface. Apophyses posteriores approximately 3.0 times as long as apophyses anteriores. Eighth sternal plate deeply concave in narrow V-shape medially on posterior margin, with sparse long setae. Lamella antevaginalis narrowly banded anteriorly, produced to a digitate process posterolaterally, longer than antrum. Antrum short, heavily sclerotized, shorter than wide. Ductus bursae inflated and membranous anteriorly, with a large curved sclerite; ductus seminalis extending anteriorly of ductus bursae. Corpus bursae ovate, granulate. Distribution. China ( Taiwan) . Etymology. The specific epithet is from the type locality, Taiwan , China .