Cecropia Moth Caterpillar • Earth.com Cecropia Moth Caterpillar

The cecropia moth, is North America’s largest native moth. There are typically five larval instars (developmental stages), each lasting approximately one week. The first instar larvae are black. Their coloration is due to small black hairs growing from tubercles (small projections) all over their body. These larvae feed upon many common trees and shrubs including maple, birch, and apple. As the caterpillars grow larger into the second larval instar, they become yellow green. During the third, fourth, and fifth instars, the cecropia moth becomes rather large and bluish green. At these final stages, the tubercles become blue, yellow or orange, depending on location on the body, while the black hairs are eventually lost.

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