A new species Nalassus bozdagus sp. nov. is described from the Aegean Region of Turkey (Bozdag ridge). The new species differs from all known Nalassus in the following characters: the hair spot on first and second abdominal sternites of male is absent, temple grooves are absent, exosceleton very strongly sclerotized. New records of Nalassus Mulsant, 1854 from Turkey are provided. Two species new for the fauna of Turkey: Nalassus (Helopondrus) gloriosus (Faldermann, 1837) and N. (Helopocerodes) faldermanni (Faldermann, 1837).