Abstract
The Chinese fauna of the pselaphine genus Sathytes Westwood (Batrisitae: Batrisini) currently includes 20 species. In this paper, 15 new species from various provinces of the country are described: S. alpicola sp. nov. (Xizang), S. australis sp. nov. (Guangdong, Guangxi), S. chayuensis sp. nov. (Xizang), S. chengzhifeii sp. nov. (Yunnan), S. huapingensis sp. nov. (Guangxi), S. linzhiensis sp. nov. (Xizang), S. maoershanus sp. nov. (Guangxi), S. nujiangensis sp. nov. (Yunnan), S. panzhaohuii sp. nov. (Xizang), S. shennong sp. nov. (Hubei), S. tianquanus sp. nov. (Sichuan), S. transversus sp. nov. (Xizang), S. valentulus sp. nov. (Guangxi), S. xingdoumontis sp. nov. (Hubei) and S. xizangensis sp. nov. (Xizang). New collection records are provided for S. longitrabis Yin & Li, 2012, S. tangliangi Yin & Li, 2012 and S. yunnanicus Yin & Li, 2012. Maps showing the distribution of the genus in China, and an updated checklist of the world species are provided.
Highlights
IntroductionThe ant-loving beetle genus Sathytes Westwood, 1870 of the tribe Batrisini Reitter, 1882 currently comprises 42 described species distributed in the southern Palaearctic and Oriental regions (Shen & Yin 2020)
The ant-loving beetle genus Sathytes Westwood, 1870 of the tribe Batrisini Reitter, 1882 currently comprises 42 described species distributed in the southern Palaearctic and Oriental regions (Shen & Yin 2020). Members of this group are highly recognizable by their coarse cuticle, while species identifications within the genus heavily rely on careful examination of the form of the male antennal clubs, and distributions
Since the first revision of Sathytes (Löbl 1979), the known world fauna has increased from 18 species to 42, with 20 additional species described from China (Yin et al 2012; Shen & Yin 2020), and four species from East Malaysia (Shen & Yin 2019)
Summary
The ant-loving beetle genus Sathytes Westwood, 1870 of the tribe Batrisini Reitter, 1882 currently comprises 42 described species distributed in the southern Palaearctic and Oriental regions (Shen & Yin 2020). Members of this group are highly recognizable by their coarse cuticle, while species identifications within the genus heavily rely on careful examination of the form of the male antennal clubs, and distributions. The aedeagus, which is normally of great diagnostic significance in beetles, is greatly simplified in Sathytes to form a flattened, plate-like median lobe, is less useful in species identification. Like many other pselaphine groups, the diversity of Sathytes in Asia remains underexplored, especially in those areas where no proper sampling has been pursued. A great number of undescribed species are expected to be found after future fieldwork has been conducted in these areas
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