Sawfly sp

Sawfly sp

Observation - Sawfly sp - UK and Ireland. Description: Impressive sawfly noted on greater water parsnip on the Somerset Levels. I know sawflies are very tricky to id, but does anyone have any idea which it may be?

Impressive sawfly noted on greater water parsnip on the Somerset Levels.

I know sawflies are very tricky to id, but does anyone have any idea which it may be?