There are many species of Sawflies in the UK and we have quite a few of these out on the reserve. They are related to wasps and bees and are quite harmless to us. They get their name from the saw-like serration along the underside of their ovipositer that they use to lay their eggs within the stems of vegetation and such like.
I think that both of these images are from a family know as Rhogogaster which seem to be largely greens and blacks. They are quite large for Sawflies being over 1cm long.
(Lawrence Rogers)
This one is eating another predator - the Scorpion Fly.... (Brenda Clayton)
10-6-13
Howard Vaughan, Information Officer