Over all length 6 - 7mm. A dark grey fly with darker marks on the thorax and abdomen.
Fields and hedgerows. The larvae feed on the roots of cruciferous plants and can be a pest when large numbers of eggs are laid around cabbage or turnip roots.
Status and distribution
Recorded widely across southern Britain but not so common further north. Fairly common on the reserve.
Best time to see
April to September.