ID Required

ID Required

Observation - ID Required - UK and Ireland. Description: Can somebody help me with the identification of this small black fly? It was about 5mm in length, and was accompanied by another thirty of so, all invading this red leaved hedge!

Can somebody help me with the identification of this small black fly? It was about 5mm in length, and was accompanied by another thirty of so, all invading this red leaved hedge!