A worldwide community photographing and learning about wildlife
Papilio polyxenes
Changed to black swallowtail.
Thanks to KeithRoragen and ForestDragon's for help with the classification.
In Spicebush Swallowtail, the row of orange dots on the underside is broken by the blue band. Black Swallowtail has a black spot at the center of the orange spot on the inner margin of the hind wing.