Notes on the Stenus indubius group with descriptions of four new species from China (Coleoptera, Staphylinidae).

Four new species of the Stenus indubius group from China are described: S. yaoluopingus Hu Tang, sp. n. from Anhui Province, S. lizipingus Hu Tang, sp. n., and S. fuscus Hu Tang, sp. n. from Sichuan Province, and S. absconditus Hu Tang, sp. n. from Guizhou Province. The diagnostic characters of the new species are illustrated and a published key to Chinese species of the group by Puthz, 2017 is modified to include the new species. Additional records of some species of the group are also provided.