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Butterfly Metamorphosis: How it Works

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Caterpillar Anatomy Tutorial

Wisconsin Native Caterpillars

American Lady (Vanessa virginiensis) caterpillar

Brown Elfin Caterpillar

Genus-Species: Callaphrys augustinus

Description: Yellow green with pale yellow dashes and a yellow lateral stripe.

Chrysalis: Brown and pellet-shaped.

Host Plants: Members of the heath family (Ericaceae), including sugar huckleberry (Vaccinium vacillans) and Labrador tea (Ledum groenlandicum). Many other plants including madrone (Arbutus) and dodder (Cuscuta).

Habitat: Mixed conifer woods, barrens, bogs, sandy coasts, chaparral.

Comments: The Brown Elfin caterpillar is yellow-green with pale yellow dashes and a yellow lateral stripe.

Adult Brown Elfin 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.

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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.

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