Size 6 to 10 mm. A shiny black beetle with dimpled elytra. Elytra wider at hind end, especially in the female, where abdomen may protrude beyond the elytra.

Roadside verges and other grassy places, often in quite dry conditions.

April to September.

Feeds on Yarrow and other composites.

Widespread and fairly frequent in Britain.

Infrequent in Leicestershire and Rutland.