Mesoneura opaca

This individual came to light. It keyed to Mesoneura quite straightforwardly and this is the only available species in the genus. The shape of the wings when closed seemed distinctive and is common across other photos of this species online, and not something I've noticed on other vaguely similar orange and black sawflies.

Mesoneura opaca showing forewing, Old Carr near Gressenhall (Norfolk, UK), 18th April 2022