Red-banded Hairstreak

Small blue-gray butterfly with red and white band
Red-banded Hairstreak, Calycopis cecrops
Brooklyn Botanic Garden, 2007-10-20

This quarter-sized butterfly is only supposed to be a vagrant this far North, but its range has been increasing. I’ve seen it two weekends in a row now in the Botanic Gardens, despite the lateness of the season. It perches on a flower and rubs its wings together in opposite directions, though I’m not sure why. I’ve never seen any other butterfly do this.

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