Hymenoptera: Cynipidae - gall wasp Diastrophus rubi Bramble Stem Gall Photographs on Rubus fruticosus, Bramble Hosts: Rubus caesius, fruticosus, idaeus, ulmifolius Large, elongated gall, often causing the stem to become bent. The gall contains up to 200 cells with a single whitish larva in each. Single generation, larvae hibernating in the gall and pupating the following spring. Mice are often predators, leaving signs of tooth marks on galls

Diastrophus rubi, Bramble Stem Gall
Durlston and Lytchett Matravers, Dorset. August 2012, September 2017