Dagger Fly?

Dagger Fly?

Observation - Dagger Fly? - UK and Ireland. Description: I don't even know if I'm right to assume this is a dagger fly - it was under a stone near a field margin hedge - it can run like crazy but it just doesn't fly. The wings are shaded as one image shows.

I don't even know if I'm right to assume this is a dagger fly - it was under a stone near a field margin hedge - it can run like crazy but it just doesn't fly. The wings are shaded as one image shows.