I've seen too there, but this one you have pictured here (by the way, a great picture!), I'm not sure what this is. Hope you find out what it is, I'd be interested too in finding out about. I haven't seen too many of these (the one you pictured), but they remind me of a mean looking critter w/ hostile eyes...

the mid-west. I found a recently deceased one once and put it in a cigar box, it was almost too big to fit. But it was eaten by mites after a short spell... glad I kept it in the garage.

In high elevation of Montana, I saw one with no color, just grey and white with a little black. It was pretty big and I was astonished to see a moth that size at 7,000ft elevation. I took pictures of that one since it was on the doorstep at my workplace early in the morning and I had my camera in the car. I don't know what became of it after I entered the building.

caterpillars are commonly called hornworms, they will eat your tomato plants