Swamp Creature

I met this weird moth yesterday,on a trail in the Bluebonnet Swamp. It [she?] was running toward me rather quickly, was impressively large, and had only vestigial wings. The moth was nearly the size of my finger. She was about the same size as that water oak leaf which is also in the picture. While I was stopped with the camera in hand, she climbed on my shoe. When she headed up my leg, enough was enough! I went on about my business and left her to her's.

Friends said it may be a luna moth; that had been one of my guesses, too. I finally matched a picture of it on this website.