Contribution to the knowledge of the genus Nephelomilta Hampson, 1900 (Lepidoptera, Erebidae, Arctiinae) from China with descriptions of two new species Author Huang, Si-Yao 0000-0002-9859-9212 Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671003, Yunnan, China & Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali, Yunnan 671003, China & huangsiyao 2007 @ aliyun. com; https: // orcid. org / 0000 - 0002 - 9859 - 9212 huangsiyao2007@aliyun.com Author Volynkin, Anton V. 0000-0001-9447-4925 Altai State University, Lenina Avenue, 61, RF- 656049, Barnaul, Russia & monstruncusarctia @ gmail. com; https: // orcid. org / 0000 - 0001 - 9447 - 4925 monstruncusarctia@gmail.com Author Xiong, Yun 0000-0002-4385-4124 Gong-shan Administration Bureau, Gao-li-gong Mountain National Nature Reserve, Nujiang, Yunnan 673500, China & 5356110682 @ qq. com; https: // orcid. org / 0000 - 0002 - 4385 - 4124 5356110682@qq.com Author Li, Ying-Chun 0000-0001-5247-0758 Gong-shan Administration Bureau, Gao-li-gong Mountain National Nature Reserve, Nujiang, Yunnan 673500, China & 765837514 @ qq. com; https: // orcid. org / 0000 - 0001 - 5247 - 0758 765837514@qq.com Author Saldaitis, Aidas 0000-0003-0999-3996 Nature Research Centre, Akademijos str., 2, LT- 08412, Vilnius- 21, Lithuania & saldrasa @ gmail. com; https: // orcid. org / 0000 - 0003 - 0999 - 3996 saldrasa@gmail.com Author Li, Xian-Fu 0000-0002-1258-1573 Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671003, Yunnan, China & Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali, Yunnan 671003, China & The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region from Dali University, Dali, Yunnan, China & lixf @ eastern-himalaya. cn; https: // orcid. org / 0000 - 0002 - 1258 - 1573 lixf@eastern-himalaya.cn text Zootaxa 2023 2023-09-29 5351 5 534 542 http://dx.doi.org/10.11646/zootaxa.5351.5.2 journal article 10.11646/zootaxa.5351.5.2 1175-5326 8392129 9C6F1A9A-A773-49CA-AE66-CF5B23ED3F07 Nephelomilta medogensis Huang, Volynkin & Saldaitis , sp. n. ( Figs 1 , 15 ) http://zoobank.org/ urn:lsid:zoobank.org:act: 2FD7D9C3-B8EE-4517-84B1-083A799058B7 Type material. Holotype ( Figs 1 , 15 ): male, 28. VII. 2018 , 80K (Bononggong), Motuo County , Xizang Autonomous Region , China , En-yong Chen & Zhao-hui Pan leg., slide NMT01 (Coll. SCAU ). Diagnosis. The forewing length is 14 mm . Externally, N. medogensis sp. n. is unique amongst the genus Nephelomilta due to the ochreous brown forewing pattern, whereas that of the similar congeners is generally reddish or ocherous red. Judging from the male genitalia structure, the new species is hereby assigned with the effracta species group (erected and characterized by Volynkin & Černý 2018 ) due to the lack of the distal membranous lobe. Nephelomilta medogensis is externally reminiscent of N. effracta ( Walker, 1854 ) ( Figs. 4 , 17 ) but can readily be distinguished by the larger size and the ochreous brown forewing pattern. In the male genitalia capsule, N. medogensis differs from N. effracta in the noticeably narrower distal section of the valva, the markedly shorter and narrower ampulla, the larger apical costal lobe, and the larger ventral-apical costal process. The phallus of the new species is thicker than in the similar congener and has a carinal plate bearing smaller denticles. Compared to N. effracta , the vesica of N. medogensis has a narrower medial diverticulum bearing a larger apical cluster of cornuti, and a broader cornuti field in the distal diverticulum. Distribution. The new species is currently known only from its type locality in Motuo County in southeastern Xizang Autonomous Region in southwestern China . Etymology. The specific epithet medogensis is derived from the type locality of the new species, Motuo County, which is called Medog in Tibetan. The name is a noun in the nominative singular in apposition.