Papilio polyxenes, black swallowtail

A black swallowtail butterfly hangs upside down, orange spots dominate the underside of wing. Yellow spots on top. Green foliage surrounds the butterfly.
A black swallowtail butterfly perches on a plant with wings open, yellow spots along the outer edges of the wings. Green foliage surrounds the butterfly.
A black swallowtail butterfly hangs on a plant. Photo from side shows yellow, spots on upper wing, orange spots with small edges of blue on lower wing. The dark black abdomen is covered with lines of white spots.