Phaonia trimaculata

Around 10mm, this is a fairly distinctive and well marked species though still requires a specimen to be examined in detail for identification to be sure.

• scutum & scutellum pattern typical
• hairy eyes
• 2+3 ac / 3+4 dc
• few hairs on notopleural next to rear seta (at least in male)
• darkened cross vein (in male)

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Often recorded in agricultural areas.

Late spring and summer.

The larvae of Phaonia trimaculata feed on the larvae of Delia radicum, often known as the Cabbage Root Fly.

Widespread in the southern half of Britain, but lack of records makes true status difficult to determine.

Status in Leicestershire and Rutland not known.