Caterpillar Identification Guide

American Lady (Vanessa virginiensis) caterpillar

Common Name: Sleepy Duskywing

Genus-Species: Erynnis brizo

Host Plants: Scrub Oak.

Habitat: Forest edges, open woodlands, and oak barrens where its larval host plants, various species of oaks, are found.

Comments: The Sleepy Duskywing is one of the earliest butterflies on the wing in the spring — besides species who overwinter as adults — and has been seen as early as April 9 in Michigan. In central Wisconsin, they are most often seen flying in May and become scarce in June.