Is this a Fever Fly?

Is this a Fever Fly?

Observation - Is this a Fever Fly? - UK and Ireland. Description: Black fly with small head, wings a hint of brown colouration. Forelegs with spines. Smaller than a St Mark's Fly. However top of legs are swollen and red. Found on a pitmound that has reverted to a mixed woodland.

Black fly with small head, wings a hint of brown colouration. Forelegs with spines. Smaller than a St Mark's Fly. However top of legs are swollen and red. Found on a pitmound that has reverted to a mixed woodland.