Taxonomic review of the genus Ammathella Volynkin, 2019 with descriptions of three new species from southeastern Xizang, China (Lepidoptera, Erebidae, Arctiinae, Lithosiini) Author Yin, Xiong-Yan https://orcid.org/0000-0003-1691-2912 College of Plant Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China Author Volynkin, Anton V. https://orcid.org/0000-0001-9447-4925 Altai State University, Lenina Avenue, 61, RF- 656049, Barnaul, Russia Author Zhang, Yu-Long https://orcid.org/0000-0002-2206-8490 Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China Author Chen, En-Yong https://orcid.org/0000-0001-7503-844X College of Plant Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China Author Huang, Si-Yao https://orcid.org/0000-0002-9859-9212 Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China huangsiyao2007@aliyun.com Author Pan, Zhao-Hui College of Plant Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China panzhaohui2005@163.com text ZooKeys 2022 2022-07-27 1114 167 182 http://dx.doi.org/10.3897/zookeys.1114.86182 journal article http://dx.doi.org/10.3897/zookeys.1114.86182 1313-2970-1114-167 7D449DF270234B68A40A39FE55B06622 B912CF63E5025174B3B868C92DAA6DB6 Ammathella monpa S.-Y. Huang, Yin & Volynkin sp. nov. Figs 8-10 , 23 , 24 Type material. Holotype : male, altitude 800 m, 9.VI.2017, Beibeng Village, Motuo County, Linzhi City, Xizang Autonomous Region, China, Zhao-hui Pan leg., slide STS-40151 (TAAHU). Paratypes : 3 males, the same data as in the holotype, slides STS-40159, STS-40167 & STS-40169 (TAAHU). Diagnosis. Length of forewing 10.6-11.8 mm ( n = 4, 10.6 mm in holotype). Ammathella monpa sp. nov. is externally very similar to A. gesar (Figs 11 , 12 , 25 , 26 ) and a reliable identification requires the examination of the genitalia structures. Compared to another similar species, A. garo (Figs 13 , 14 , 27 , 33 ), the new species has hindwing cilia black from apex to vein CuA2, while it is pinkish, scattered with black, from apex to tornus in A. garo . In the male genitalia, A. monpa sp. nov. is distinguished from the two similar congeners by the combination of the following characters. (1) The juxta is much narrower and smaller. (2) The medial process of juxta is short, round, and covered with spinules thoroughly, whereas the juxta of A. garo bears a long conical medial process, and that of A. gesar lacks a process. (3) The distal costal process is situated more distally from the medial costal process, similar to that in A. garo , while it is situated closer to the medial costal process in A. gesar . (4) The distal costal process is longer than in A. gesar and A. garo . (5) The distal saccular process is apically rounded, similar to A. garo , while it is apically pointed in A. gesar . (6) The phallus is slender and straight, similar to A. gesar , while forms an S-like curve in A. garo . (7) In the phallus vesica of A. monpa sp. nov., the subbasal diverticulum is larger than in A. gesar and A. garo . Additionally, the cornuti on the ventral medial diverticulum of the new species are larger than in A. gesar and more similar to those in A. garo . Figure 19-22. Male genitalia of Ammathella 19 holotype of A. longicornuta sp. nov., slide STS-40157, SW China (TAAHU) 20 paratype of A. longicornuta sp. nov., slide STS-40163, SW China (TAAHU) 21 holotype of A. lhoba sp. nov., slide STS-40180, SW China (TAAHU) 22 paratype of A. lhoba sp. nov., slide STS-38863, SW China (TAAHU). The female is unknown. Etymology. The specific epithet Ammathella monpa refers to the local Monpa people in Motuo County. Distribution. Currently known only from the type locality in Motuo County, southeastern Xizang, China.