A caterpillar represents the larval stage of the insect order Lepidoptera - the largest order of insects. The order encompasses Butterflies, Moths, and the related Skipper and some 160,000 types are recognized today. While showcasing traits common to worms, caterpillars are not worms at all with many species, in fact, feed on plants. The pages and images contained within this site help identify both major and minor caterpillar types common to the United States and bordering regions.
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