Common in gardens, allotments, open woodland and a wide range of other habitats throughout the British Isles. In Hampshire and on the Isle of Wight there is no real sign of any decline in recent years, still widespread and common. Wingspan 34-50 mm. Distinctive white edge to reniform stigma; has been confused with
Dot Moth Melanchra persicariae, but much less obviously black and white then this species. Larva polyphagous, but with a preference for
Brassica, causing sufficient damage to be a serious pest in some areas, and over-wintering as a pupa or larva.