This is a leopard moth (Zeuzera pyrina) identified by the distinguished biology professor Mary Wicksten of Texas A&M University. I just could not figure out exactly what it was, except I thought it a moth and not a butterfly, so I asked her to help me out. She graciously obliged.
I photographed this next to the Chevron station on SH-146 as you exit Mont Belvieu. Isn't it beautiful?
