Abstract
The genus Sinotrisus Yin & Li, comprising four species, is redefined and revised. Members of Sinotrisus are often found with ants of the subfamily Formicinae, or in humid forest habitats. The type speciesand three new species are (re-)described and illustrated: Sinotrisus kishimotoi Yin & Nomura, sp. n. (China: Sichuan), Sinotrisus nomurai Yin, Li & Zhao (type species) (China: Zhejing), Sinotrisus sinensis Yin & Nomura, sp. n. (China: Sichuan) and Sinotrisus vietnamensis Yin & Nomura, sp. n. (Vietnam: Lai Chau). A key is included as an aid to distinguishing these species.
Highlights
Batrisitae (Newton & Thayer, 1995) comprises more than 220 genera distributed in all zoogeographical regions except for New Zealand, and about one-third of them are known from Asia (Newton and Chandler 1989 and subsequent papers)
Li & Zhao, from East China (Yin et al 2010), which is known from two males collected in a nest of the ant genus Lasius
A key is provided to assist in the identification of these species
Summary
A taxonomic revision of the genus Sinotrisus Yin & Li (Coleoptera, Staphylinidae, Pselaphinae).
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