The first Luna Moth (Actias luna) we've seen this season was on the window screen outside our computer room/office early Friday morning. Based on its large antennae and tails, I'd say this is a male. Here in the south, Luna moths have enough time to go through three life cycles before the weather turns cold again. Actias luna only live for about a week in this final moth stage of their life. They do not feed. In fact, they have incomplete mouth parts and no digestive system. Their only purpose as adult moths is to find a mate and breed, and for females to lay eggs so their life cycle can continue. For complete species details, please see BugGuide.