In the present study a gregarine parasite is described from Psylliodes cupreus Koch 1803 (Coleoptera: Chrysomelidae) in Turkey for the first time. Gregarine infection was observed in all localities investigated during the study. Infection in P. cupreus populations was 25%. During the study, several life stages, such as trophozoite, gamont and associative form of the gregarine parasite were observed in the intestine lumen of P. cupreus adults. Measurements of gregarine gamonts and primites-satellites in associations are given.