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Silver-studded Blue - Plebejus argus - male (top row) - female (middle row) - N Wales ssp. caernensis (bottom row). Wingspan 25-30mm. An iconic heathland butterfly whose fate is inextricably linked to appropriate habitat management. Flight is buzzing and hard to follow but adults are also fond of sunbathing on Heather. Adult male has blue upperwings with a white margin and dark submarginal band; female upperwings are brown with orange submarginal spots. Underwings are grey adorned with orange and black spots, with shiny spots at the centre of orange and black spots adorning the underwings. Flies June-July. Their larvae feed on Heather and gorse species.