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An illustration of a Io moth caterpillar. The io moth (Automeris io) is a very colorful North American moth in the Saturniidae family. It ranges from the southeast corner of Manitoba and in the southern extremes of Ontario, Quebec, and New Brunswick in Canada, and in the US it is found from North Dakota, South Dakota, Nebraska, Colorado, New Mexico, Texas, Utah, east of those states and down to the southern end of Florida.

Io Moth Caterpillar

An illustration of a Io moth caterpillar. The io moth (Automeris io) is a very colorful North American…

"Io, Argus, and Mercury" — Gayley, 1893

Io Argus

"Io, Argus, and Mercury" — Gayley, 1893