The genus Anomognathus Solier, 1849 (Coleoptera: Staphylinidae: Aleocharinae) comprises 10 species in the Palearctic Region. In the present study, a new species of the genus Anomognathus is described from Isparta Province of southwestern Anatolia and illustrated: Anomognathus ispartaensis sp. n. The new species is distinguished from all its congeners by the different body proportions, differently shaped tergite VIII of male, and by the completely different aedeagus. Three species of this genus are now known from Turkey. Specimens of this unknown species were collected from damaged cones of Pinus brutia Tenore by larvae of the Turkish red pine cone moth Dioryctria mendacella (Staudinger, 1859) (Lepidoptera: Pyralidae: Phycitinae) on 10 May 2016. The adult specimens emerged between 17 and 25 May 2016. This new species is probably a predator of D. mendacella.