Hymenoptera: Cynipoidea Cynipidae - Synergus sp. Iniquiline Emerged from agamic Callirhytis erythrocephala gall on Quercus x hispanica Robin Williams (Oak Galls in Britain) lists no iniquilines or parasitoids on agamic galls but lists 2 parasitoids on sexual galls: Eurytoma brunniventris, Megastigmus dorsalis

Synergus sp.
From gall collected Kingston Lacy, Dorset. February 2018