Males are slightly smaller than females, which reach a length of around 10 or 12 mm. Elongate and rather parallel-sided, the species is entirely dark brown or blackish but often with the elytra a little lighter than the forebody. Legs and antennae pale to mid-brown. Head reflexed under the pronotum and entirely hidden from above.

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features, then in the comments box describe the size and identifying characters you have observed.

The species is associated with various broadleaf trees and is sometimes found under bark or in woodpiles. It can also be attracted to light.

Adults occur over a relatively short period in the summer, beginning in June and continuing into August, they are nocturnal and may be seen on the surface of logs and trunks infested with fungi.

Widespread in the southern half of Britain, though not particularly common.

Occasional in Leicestershire and Rutland.