Someone in our office found these two on her car one morning
on her way in. I’ve identified them as the sexually
dimorphic Papilio glaucus more commonly called Eastern Tiger
Swallowtail. Is that a correct identification? Also, it is
an interesting picture thought you might enjoy.
Thanks so much for sending this beautiful image of mating
sexually dimorphic Eastern Tiger Swallowtails. The dark individual
is a female, and a small percentage of Eastern Tiger Swallowtails
show this color pattern. We have also received images of intermediate
stages: not quite light, and not quite dark.