When I went to start my car this morning, this was on my hood---a Luna Moth (Actias luna)! These babies are amazing, and here is the lowdown. As a caterpillar, it goes through 5 different exoskeletons (called instars, for you scientific geeks), all of which are bright green. Finally, it spins a cocoon and "pupates" for two weeks, at which time this beautiful moth emerges. It always emerges in the morning, and when first hatched, it climbs to a "safe" spot until its wings harden and it can fly away. Hence, the reason it was sitting on my hood this morning and didn't fly away when I came out--it couldn't because its wings weren't stable enough. Final fact--as a moth, it has no mouth because it doesn't eat! Its only function is to reproduce and lay eggs, and it better do it quick, because it only lives for seven (7) days!