Common in woodland, heathland, scrubby grassland and marshes throughout the British Isles. In Hampshire widely distributed, but not particularly common and generally absent from the chalk. Not recorded from the Isle of Wight since 1982. Wingspan 38-44 mm. Combination of general appearance and two black dots close to apex of forewing is distinctive. Larva feeds on herbaceous plants such as Primrose, Stinging Nettle and Dock in autumn, and woody plants such as Blackthorn, Bog-myrtle and Willow in spring.