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Papilio glaucus
Spotted on Jun 29, 2012
Submitted on Jul 3, 2012
1 Comment
I think this is more likely a dark form Female Tiger Swallowtail - Papilio glaucus. P. Troilus generally has a submarginal band of crescents on the forewing and lacks the faint yellow medial markings on the forewing.
http://bugguide.net/node/view/34971