Hymenoptera: Cynipidae - gall wasp Biorhiza pallida Oak Apple Gall Sexual gall, photographs on Quercus, Oak Hosts: Agamic: Quercus frainetto, petraea, pubescens, pyrenaica, robur Groups of unicellular galls fused to roots. Mature October of second year Sexual: Quercus canariensis, faginea, frainetto, infectoria, lusitanica, petraea, pubescens, pyrenaica, robur Forms large pinkish-white, +/- globular, spongy galls. Multicellular, the adults emerging in June and July

Biorhiza pallida
Upton Country Park and Pamphill, Dorset. May 2018