Local in woodland, hedgerows, parks, orchards and gardens throughout the British Isles. In Hampshire and on the Isle of Wight widespread and fairly common in oak woodland, though evidently less frequent than formerly. Wingspan 16-24 mm. Could be confused with Small Black Arches Meganola strigula
, but M. strigula
has more dentate median fascia. Larva feeds on Downy Birch, Blackthorn, Buckthorn and Lime, over-wintering as a pupa.