I NEVER leave my porchlight on, and so far this summer, haven't even used it, but last night, expecting my own brother in by 2:00 A.M. was quite a different deal. I went out to wait for him, and noticed 3 walnut sphinx [Amorpha juglandis] on my door and outside wall. What a treat! I did not capture or even disturb them, but with all the hickories around, I sure want to find some of their larvae. They are the famous squeaking hornworms, too.