Hymenoptera: Cynipidae - gall wasp Andricus gemmeus Agamic generation - photographs on Quercus, Oak First recorded in Britain in 2008 Hosts: Agamic generation on Querus petraea, robur Sexual generation on Querus cerris Agamic - small clustered galls 3-4mm high. Initially soft, slightly pubescent and greenish-yellow becoming reddish-brown and woody with age Sexual - a short compact shoot (resembling a bud) with distorted and very hairy reddish leaves

Andricus gemmeus
Upton, Dorset. November 2017