The Collaborative International Dictionary
Callosamia promethea
Promethea \Pro*me"the*a\, n. [NL. See Prometheus.] (Zo["o]l.) A large American bombycid moth ( Callosamia promethea). Its larva feeds on the sassafras, wild cherry, and other trees, and suspends its cocoon from a branch by a silken band.
Wikipedia
Callosamia promethea
The Promethea Silkmoth (Callosamia promethea), is a member of the Saturniidae family of moths.