Caterpillar Identification Guide

American Lady (Vanessa virginiensis) caterpillar

Bronze Copper

Genus-Species: Lycaena hyllus

Host Plants: Herbs of the buckwheat family (Polygonaceae) including curly dock (Rumex crispus).

Habitat: Wetlands and wetland edges where various species of docks and knotweeds are available as host plants.

Comments: The Bronze Copper has been found throughout Wisconsin except for the northernmost counties, and is common in the southern counties. It is found in moister habitats than the American Copper, and edges of wetland areas are prime spots for this showy butterfly. The butterfly is often found perching on vegetationw hen good nectar sources like Swamp Milkweed are available.

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.