Local in woodland, gardens, orchards and parks throughout the British Isles. In Hampshire and Wight widespread and locally common. Wingspan 12-14 mm. Crepuscular. The narrow, sharply angled fore- and hindwings and the ferruginous general coloration of the forewing and its triangular, plumbeous and black dorsal patch are characteristic; the male is further distinguished by its white, apically infuscate hindwing [Bradley]. Larva feeds on shoots and leaves of Oak, Blackthorn and Birch.