Promethea Silkmoth - Callosamia promethea

At least I think that's what it is. The Tulip-tree Silkmoth is very similar, though I think a bit larger than this one.

We found this and a Cecropia moth on the moth sheet very early this morning. Unfortunately, the Cecropia
appeared to have some damage to its abdomen. I can only guess how it happened as the wings looked very fresh.
There was a click beetle feeding on the injury. :-(