Polyphemus Moth
Antheraea polyphemus

I happened to find this guy while mowing the lawn. A few years earlier, I found a polyphemus caterpillar in the same area. It was the largest caterpillar I had ever seen. Unfortunately, at the time, I didn't have a camera.

Till now man has been up against Nature; from now on he will be up against his own nature.
Dennis Gabor
Inventing the Future, 1964