Hymenoptera: Cynipidae - gall wasp Callirhytis sp. Sexual gall on Quercus, Oak Hosts: Quercus petraea, robur The galls made by the sexual generation of Callirhytis erythrocephala, glandium and rufescens cannot be reliably separated.

Callirhytis sp.
Kingston Lacy, Dorset. May 2018