Description

Body length 5 to 6mm. A small, grey and black fly with a well marked abdomen.

Habitat

There is not much information about habitat available. The larvae are endoparasites of sawflies, often in association with Willow or Ash trees.

Status and distribution

Uncommon in Britain and in Nottinghamshire. Regular at Netherfield Lagoons.

Best time to see

July to September.