Pamphilius  Pamphilius is a genus of leaf-rolling sawflies within the Symphyta belonging to the family Pamphiliidae. Species of this genus can reach a length of . Body is usually black with yellowish spots on the head. Legs are yellow and wings are transparent. Tarsal claws have one apical and subapical tooth. Mandibles are large and sickle-shaped. Adults can be found from May until June. Larvae may be solitary or form a colony, mainly feeding on deciduous trees. Main host plants are Rosaceae and Betulaceae, others are Salicaceae, Aceraceae, Caprifoliaceae, Fagaceae, Cornaceae and Juglandaceae. Species of this genus can be found in North America and in Eurasia. These species prefer hedge rows. This genus includes about 115 species.