Morty2264
Ambassador
I've never seen one before so I did some searching and learned it's a Madagascan moon moth (also called Comet Moth).
Not native to the U.S. but apparently can be raised in captivity so maybe that explains it.
The resting wingspan on this one was about 3 1/2 inches across so it was fairly large.
That's crazy! A big dude, to be sure.