Caterpillar Identification Guide

American Lady (Vanessa virginiensis) caterpillar

Common Name: Giant Swallowtail

Genus-Species: Papilio cresphontes

Host Plants: Prickly ash (Zanthoxylum americanum) and Hoptree (Ptelea trifoliata)

Habitat: Woodlands and open areas near woodlands, where the larval host plant, Prickly Ash, is found.

Comments: The Giant Swallowtail is an uncommon stray in most parts of Wisconsin.