Arizona-state-butterfly
Guides
Papilio multicaudata
Two-tailed Swallowtail
Papilio multicaudata, the two-tailed swallowtail, is a large butterfly species in the family Papilionidae found across western North America. It is distinguished from related tiger swallowtails by having two tails on each hindwing rather than one, and by the presence of a black 'slit pupil' in the orange eyespot on each hindwing. It is the largest swallowtail in western North America and serves as the state butterfly of Arizona. Adults fly during spring and summer with one brood per year.