An endangered Red Data Book species, in woodland clearings, woodland edges, undercliffs and scrub; 0-300 m (0-1900 m in Europe) in southern England, where declining, and parts of Ireland, where still widespread; mainland Europe and Scandinavia. Not recorded in Hampshire or on the Isle of Wight in recent years. Wingspan 36-48 mm. Indistinguishable in the field from
Real's Wood White, from which separable only by dissection of the genitalia. Larva feeds on Meadow Vetchling, Bitter Vetchling, Tufted Vetch, Bird's-foot Trefoil and Greater Bird's-foot Trefoil.