Silvery Blue Butterfly. There are about a dozen subspecies of Silvery Blue (Glaucopsyche lygdamus) but only one of them is found in Canada-subspecies couperi. It can be seen in every province and territory as far north as Tuktoyaktuk (Northwest Territories) but is rarely seen in southwestern Ontario. A single generation of Silvery Blue flies each season; from early May to early July in the south and from mid-June to mid-August in Newfoundland and the north.
With its stunning shiny blue wings, the Silvery Blue will turn anyone into a butterfly enthusiast. The edges of the wings feature a dark grey border which is usually wider in the females and often infuses the entire surface of the wing with grey. The underside is grey throughout, with a single row of round spots that are black with white rims.