Unusual Butterfly on Rock Wall

Last week I went on a long nature walk with the camera. I found this unusual critter behind an enormous rock at the very end of the property. My presence disturbed it and it flew down near the ground in a place I could take a picture. I was on my hands and knees trying to get as close as possible with the camera. When it felt disturbed he shook his tail full of fake eyes. The photo session was brief and I was happy I managed to get this shot. The butterfly/moth had a wing span of about 2 1/2 inches.