Hymenoptera: Tenthredinidae - sawfly Euura mucronata Photographs on Salix cinerea, Sallow Hosts: Salix aurita, caprea, cinerea Causes swelling of catkin buds, often several affected on the same twig. Each gall contains frass and a single larva. Pupation occurs in the soil. N.B. Potential galls need checking for larva and / or frass Similar: Rabdophaga gemmicola. No frass, solitary orange-red larva Hosts: Salix aurita, caprea, cinerea

Euura mucronata
Corfe Mullen, Dorset. October 2017