Pearl-bordered fritillary  (Boloria euphrosyne)

Widespread throughout Europe from northern Spain to Scandinavia, reaching as far east as Russia. Once widespread throughout much of Britain, the pearl-bordered fritillary has suffered a severe and rapid decline in England and Wales over last 50 years (4). It has become locally extinct in most of Wales, and central and eastern England (3).

Found in woodland clearings, open deciduous wood pasture in Scotland, and in free-draining areas with a patchwork of grass, bracken and some scrub. The pearl-bordered fritillary requires abundant supplies of the main foodplants, common dog-violet (Viola riviniana) (3) and other Viola species (2) for the caterpillars, and plenty of nectar-rich spring flowers for the adults to feed on (5).