Tachinid Fly

Phasia obesa


Body length 4 - 6mm. Mainly grey with strong black markings on the thorax and a pattern of shading along some of the veins of the wings.


Grasslands, woodland edge, hedgerows where the adults feed on nectar from plants in the Asteraeae family, including daisies and tansy. The larvae are parasites of heteropteran bugs.

Status and distribution

Fairly widespread in England apart from the West Country. Uncommon anywhere else. Uncommon in Nottinghamshire and recorded twice at Netherfield Lagoons.

Best time to see

June to September.