Phylloteras volutellae
Phylloteras volutellae, the conical oak gall wasp, is a species of gall wasp,
tribe Cynipini,
found in North America.
Larvae induce galls on the leaves of white oaks, including bur oak and swamp white oak.
Description
Each gall contains a single larva and is formed on the underside of host leaves, often in clusters. The detachable gall is conical in shape and concave at the top.The adult emerges from the gall in early January, but is otherwise undescribed.