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 longicornuta S.-Y. Huang, Yin & Volynkin sp. nov. Figs 1-4 , 19 , 20 , 31 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-40157 (TAAHU). Paratypes : 5 males, 3 females, same data as the holotype, slides STS-40148, STS-40154, STS-40155 & STS-40163 (male); STS-40156, STS-40162 & STS-40164 (female) (TAAHU). Figure 1-10. Adults of Ammathella 1 holotype of A. longicornuta sp. nov., male, STS-40157, SW China (TAAHU) 2 paratype of A. longicornuta sp. nov., male, STS-40163, SW China (TAAHU) 3 paratype of A. longicornuta sp. nov., female, STS-40156, SW China (TAAHU) 4 paratype of A. longicornuta sp. nov., female, STS-40164, SW China (TAAHU) 5 holotype of A. lhoba sp. nov., male, STS-40180, SW China (TAAHU) 6 paratype of A. lhoba sp. nov., male, STS-38863, SW China (TAAHU) 7 paratype of A. lhoba sp. nov., female, STS-38864, SW China (TAAHU) 8 holotype of A. monpa sp. nov., male, STS-40151, SW China (TAAHU) 9 paratype of A. monpa sp. nov., male, STS-40159, SW China (TAAHU) 10 paratype of A. monpa sp. nov., male, STS-40169, SW China (TAAHU). Diagnosis. Length of forewing 11.4-11.9 mm ( n = 5, 11.5 mm in holotype) in males and 12.6-13.1 mm ( n = 3) in females. Ammathella longicornuta sp. nov. is externally reminiscent of A. gesar (Figs 11 , 12 , 25 , 26 ) and A. garo (Figs 13 , 14 , 27 , 33 ) but is distinguished by the male tip of abdomen, which is pinkish and covered with much lesser blackish hair-like scales than in the similar congeners, and the obsolete submarginal dull yellowish spots on the forewing (whereas they are prominent in A. gesar and A. garo ). In the male genitalia, A. longicornuta sp. nov. is distinguished from the two similar congeners by the combination of the following characters. (1) The juxta lacks a medial process, similar to A. gesar , while the juxta of A. garo bears a long conical process. (2) The medial costal process is minute while it is large and prominent in A. gesar and A. garo . (3) The distal costal process is situated more distally than in A. gesar and A. garo , and is much broader and shorter, whereas it is lobe-like and markedly narrower in the congeners. (4) The distal saccular process is directed distally whereas it is up curved in A. gesar and A. garo . (5) In the phallus vesica, the subbasal diverticulum bears a small cluster of cornuti apically (absent in A. gesar and A. garo ). (6) The semiglobular medial diverticulum bears a broad cluster consisting of several large and long cornuti basally and numerous smaller cornuti ventro-distally, while in A. gesar and A. garo , the cornuti in the semiglobular medial diverticulum are more or less equal in size. (7) The ventro-basal elongate diverticulum of A. longicornuta sp. nov. is longer than in A. garo , while it is absent in A. gesar . Since the female of A. gesar is unknown, the female genitalia of A. longicornuta sp. nov. are compared only to A. garo , from which the new species differs in the shorter and broader ductus bursae, and the lack of a signum bursae, which is present in A. garo . Etymology. The specific epithet Ammathella longicornuta refers to the presence of long and large cornuti on the surface of the semiglobular medial diverticulum in vesica of male genitalia. Distribution. Currently known only from the type locality in Motuo County, southeastern Xizang, China.