Body length 12 to 18mm. A robust black species with a black-tipped, reddish abdomen. The tarsi are pale yellowish and the bases of the antennae are pale.
Woodland edge and hedgerows. The adults feed on umbelliferous flowers and the larvae are internal parasites of Swift Moth caterpillars.
Status and distribution
Widespread but thinly dispersed throughout Britain. Poorly recorded in Nottinghamshire.
Best time to see
May to September.