Abstract
In this study, three new species belonging to the subgenus Eurysunius Reitter of the genus Astenus Dejean (Coleoptera: Staphylinidae: Paederinae) are described and illustrated from central northern Anatolia, in Turkey, and compared with the related species: Astenus corumensis sp. n. and A. hititicus sp. n. (Çorum province), and A. kaspareki sp. n. (Amasya province). A improved key to Turkish species of Eurysunius is provided as well. The distributions of 28 species in Turkey are mapped.
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