Blue Butterflies: Glaucopsyche
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North American Glaucopsyche species span the alphabet from A to S, with the Arrowhead Blue and the Silvery Blue accounting for the total population.
The more geographically limited species, the Arrowhead Blue (Glaucopsyche piasus), easily gets identified by its distinct gray and white wing pattern.
Their range extends throughout higher elevation areas of the West.
Like so many of the blue butterflies, lupines serve as the host plant for the caterpillars.
The silvery blue butterfly (Glaucopsyche lygdamus) spreads its wings across most of North America. The side wing pattern characterized by white, circled spots, helps identify it.
The top view of the female shown in the bottom picture highlights its white bordered wings. The top side of the male silvery blue's wings show a lighter shade of blue surrounded by a dark border.
© 2009-2011 Patricia A. Michaels