The 30 Most Beautiful Insects in the World

Io Moth Caterpillar
io moth caterpillar
RAIN0975 / FLICKR
What it is: Automeris io

Where it’s from: North America

What to know: This guy might look as harmless as moss or artificial turf, but the io moth caterpillar packs a painful sting. Its trademark spines can cause welts, itching, and redness (nowhere near as bad as the puss caterpillar, though).
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