Length 9-11 mm. A distinctively large and well-marked species, which should be unmistakable. The cuneus varies from yellow to orange-red, but is never black-tipped. The rather ant-like nymphs are dark with yellow markings and reddish-brown legs.

Rhabdomiris striatellus is shorter and broader, with dark-tipped cuneus and a yellow scutellum.

It is usually associated with Oak and Hawthorn.

Adult: May-July.

Overwintered eggs hatch in April, becoming adult by late May or early June. It is largely predatory, feeding on small insects such as aphids, and the eggs and larvae of moths and beetles.

This species may be found throughout Britain but is more local in the south.

Common in Leicestershire and Rutland.