The Pipevine Swallowtail is abundant throughout Texas. It frequents gardens and can be found in flower fields and groves of trees. Its caterpillars feed on pipevine, a noxious plant which makes the butterflies taste bad to predators.
Several other species of swallowtail mimic the Pipevine including the Spicebush and Black Swallowtails. The Pipevine stands out from its imitators with a single row of orange circles on the underside and a single row of white spots on the upperside.
The males shine an iridescent blue on the lower upperside while the females are mostly black.
I have had success in attracting Pipevine Swallowtails to my own yard with plumbago, vinca, and zinnia.
Similar species: Black Swallowtail, Spicebush Swallowtail