I think that was a Luna moth.

The website says they fly only at night in the Spring and Summer. It also says that they only live for a week. They don't even eat. Their only purpose is to mate.
Formerly misspam.
Joined: Feb. 2008

Reminds me of my safari in Africa. Somebody forgot the corkscrew and for several days we had to live on nothing but food and water. - W. C. Fields