This large moth was photographed in a Buddleia 'White Profusion' on September 9. It was quite large (1"-1 1/2").
I have included a side view from both sides. He resembled the Ghost Moth but I am far from comfortable with that.
I think it looks like it could be a Soybean Looper. There is some variation in the coloring, or at least how they look when photographed in different lighting, but take a look at their BugGuide page and see how it matches up to yours.
Here is a link that might be useful: Soybean loopers on BugGuide
Several of their examples are dead-on!
Thanks so much for your speedy solution!