Abstract
In this study, twenty four Xantholinus species are reported from Turkey. Amongst them, X. (Calolinus) bayrami sp. nov. from Konya province, X. (Helicophallus) ceviki sp. nov. from Ardahan and Erzurum provinces, and X. (H.) khachikovi sp. nov. from Muş province are described, and their diagnostic characters are illustrated. In addition, X. (Heterolius) fortepunctatus Motschulsky, 1860 is redescribed and illustrated. Numerous new and additional records of Xantholinus species from Turkey are presented. A distributional checklist of the thirty eight species of Xantholinus represented in Turkey is provided. The distributions of Turkish Helicophallus species are mapped.