Wingspan 30 to 35 mm. A variable species throughout its range, there are a number of named forms and aberrations. 

The more northern populations inhabit moorland, but further south it is generally a woodland species.

The adults are on the wing in September and October.

The larvae feed on deciduous trees in the south, and mainly heather (Calluna) in the northern moors.

Fairly frequent in the southern half of England and Wales, less so in northern England, Scotland and Ireland. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

Fairly frequent but not common in Leicestershire and Rutland. L&R Moth Group status = B (scarce resident or restricted distribution or regular migrant).