Common immigrant from mainland Europe and Fennoscandia, appearing throughout the British Isles, in most years arriving in sufficient numbers to breed; huge numbers arrived in a massive influx of this species in 2009. In Hampshire and on the Isle of Wight abundant in some years, quite uncommon in others. Wingspan 64-70 mm. Very similar to
American Painted Lady, but underside of hindwing has row of many small spots, two large spots in American Painted Lady. Larva feeds on Thistle, unable to over-winter in significant numbers.