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Papilio appalachiensis
Female is predominantly black, unlike the yellow males
Hiking trail at small State Park in SW Pennsylvania
These four butterflies were in almost constant motion either on the ground or slightly above it. The males seemed to be trying to get the females attention while she played hard to get.
1 Comment
It looks like the dark butterfly in this image is a Spicebush Swallowtail rather than a female Tiger Swallowtail. http://bugguide.net/node/view/2648