Cephaloleia trilineata is a species of beetle of the family Chrysomelidae. It is found in Argentina and Brazil (RÃÂo de Janeiro).
Adults reach a length of about 6âÂÂ6.2 mm. Adults are yellowish-brown, with antennomeres 1âÂÂ2 reddish-brown and 3âÂÂ11 black. The head has the vertex black and the scutellum is also black. The elytron has a black sutural vitta, a black vitta from the humerus to near the apex, and a black apex.