Just a giant silk moth then I guess. Says they're most common in Illinois & Canada, never seen one before here though. Could probably mistake it for a bat at night.
Beat me to it. I thought at first it might have been a type of Emperor Moth, which is also one of the Saturniidae. Very similar looking. But no, you're right. - Coeloptera
I saw a huge ass moth like that the other day at work (Pennsylvania, but people drive in from all over, could have been brought in by one of them?)
I don't mean to hijack the thread or anything, but since we're on the topic of giant creepy-crawlies, here's a huge slug that's been living around my house. We call him "Super Slug".
Well, it's definitely big. But, it doesn't hold a candle to the Atlas moth: Worlds Largest Insects - Topic | ChaCha Answers