Spotted just outside my cabin today. The caterpillar of a Pipevine Swallowtail (Battus philenor). The larval host of this Swallowtail are plants in the genus Aristolochia. The leaves of these plants contain aristolochic acid, which is toxic to some animals, which protects the Pipevine Swallowtail.  This is the adult Pipevine Swallowtail. They are protected by the…