|MadSci Network: Zoology|
I can't identify the moth from your description but I bet your county extension agent can; just give that office a call. They should be able to identify the moth and tell you its primary host plant. The site below has a great section on caterpillar rearing but you'll still need to know the host plant in order to successfully rear the larvae.
Try the links in the MadSci Library for more information on Zoology.