Common in broad-leaved woodland, fens, heathland, parks and gardens throughout much of the British Isles. In Hampshire and on the Isle of Wight widespread and generally common, and comes freely to sugar, and also to light before and after hibernation; hibernating moths can be found in sometimes large groups in cellars, garages and outhouses. Wingspan 46-52 mm. Unmistakable. Larva feeds on Grey Willow, Creeping Willow, Aspen, White Poplar and Black Poplar; often found on bushes of sallow, willow and poplar in late summer.