Phylloteras
Guides
Phylloteras sigma
Phylloteras sigma is a species of gall wasp in the family Cynipidae. As a member of this family, it is an obligate gall-former on oak trees (Quercus species). The genus Phylloteras is associated with leaf galls on oaks, and species in this genus induce distinctive galls on oak foliage. Like other Cynipidae, P. sigma has a complex life cycle that typically alternates between sexual and asexual generations, though specific details for this species remain poorly documented.
Phylloteras volutellae
conical oak gall wasp
Phylloteras volutellae is a cynipid gall wasp native to North America that induces distinctive conical galls on the leaves of white oaks (Quercus section Quercus). The species is best known for the detachable, clustered galls formed on leaf undersides, each housing a single larva. Adults emerge in early January, though adult morphology remains undescribed.