Wisconsin Native Caterpillars

American Lady (Vanessa virginiensis) caterpillar

Juvenal's Duskywing Caterpillar

Genus-Species: Erynnis juvenalis

Description: The caterpillar is greenish with a pale yellow lateral stripe. The body is covered with tiny white dots. The head is brown with three yellow-orange patches on each side.

Chrysalis: The chrysalis is dark green or brown.

Host Plants: Tree Oak, Scrub Oak.

Habitat: Woodlands and woodland edges where oaks the larval host plants grow.

Comments: Juvenals Duskywing is a very common butterfly throughout Wisconsin. The caterpillars develop rather slowly compared to most other butterflies. They do not complete their growth until fall, during which time they hibernate for the winter within a tubular retreat formed of rolled leaves and tied together with silk strands. They do not pupate until the early spring.

Adult Butterfly Profile
Bog Fritillary, Boloria eunomia

Caterpillar Anatomy: A Tutorial

Caterpillars come in many colors, shapes, and sizes. Some caterpillars are quite hairy, while others are smooth. Despite differences between species, though, all caterpillars share certain morphological features.

Bee Quiz Graphic

Caterpillar Quiz

Take this quick quiz and see how much you know about caterpillars. This quiz is intended for fun, in a random-facts-can-be-cool kind of way.

Eastern Tiger Swallowtail, Papilio glaucus

How Caterpillars Change Into Butterflies

How does this magic happen? Learn about metamorphosis - the process of transformation from an immature form to an adult bitterfly.

Bees flying footer graphic