from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A large yellowish North American moth (Automeris io) having a prominent eyelike spot on each hind wing.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large yellow moth, Automeris io, found in North America.
After Io, who was tormented by gadflies sent by Hera as a punishment (from the stinging spines of its larvae).(American Heritage® Dictionary of the English Language, Fourth Edition)