Callophrys augustinus “Brown Elfin” Lycaenidae

Glacier National Park, MT
June 20, 2014
Robert Niese

This is a pretty common butterfly here in Montana. You can easily recognize them by their Lycaenid shape and dull metallic-y brown color. These guys don’t have tails like the hairstreaks, but sometimes have a tail-like lobe on their hindwings.

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