Euura bergmanni

5-8mm. Females are largely green but colour and the amount of black markings is variable. The species has 2 or more generations and summer specimens are usually greener and often have an anchor-shaped mark on the scutellum. Males are mainly yellow/orange. Identification is difficult and requires examination of the female saw or male penis valves.

The larvae are green with a pale dorsal stripe. They have a pale head and a dark vertical stripe crosses the eye. The larvae feed on willows (Salix sp.)

Adults , Larva

Larvae: Detailed images are required and note the tree species it was found on.

Adults:  Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Larvae are found on willows - Salix sp.

April - September

Common

Uncommon or under-recorded.

https://www.sawflies.org.uk/euura-bergmanni/