Hymenoptera: Chalcidoidea Pteromalidae - Mesopolobus sp. Emerged from Andricus quercuscalicis, Knopper Gall on Quercus Robin Williams (Oak Galls in Britain) lists 4 iniquilines and 19 parasitoids: Synergus gallaepomiformis, S. nervosus, S. pallicornis, S. umbraculus Arthrolytus ocellus, Cecidostiba fungosa, C. semifascia, Eupelmus urozonus, E. vesicularis, Eurytoma brunniventris, Gelis formicarius, Mastrus deminuens (=castaneus), Megastigmus dorsalis, M. stigmatizans, Mesopolobus amaenus, M. sericeus, M. tibialis, Ormyrus nitidulus, Spilomicrus stigmaticalis, Sycophila bigutatta, Torymus auratus (=nitens), T. cyaneus, T. geranii

Mesopolobus sp.
From Andricus quercuscalicis gall collected Randalls Hill, Dorset. March 2018