that is a silk moth (Bombyx mori - family Bombycidae)
This is the moth that is reared in the silk industry and is where we get our silk. They are related to the wild silk moths (luna, cecropia, polyphemus - family Saturniidae) but the Bombyx do not fly in the wild anymore and are totally dependent on humans for their life. Many of us who have reptiles feed the caterpillar and adult moth to them. I draw the line at the wild silks - I raise them, too.
What is your interest? You can easily purchase them, artificial chow (unless you have Mulberry trees on hand) and raise them. They are lovely as adult - they remind me of wood. They are not large, only about an inch or less.
silkworms