I think it's a copper underwing/Amphipyra pyramidoides, Tony, and it's probably making its cocoon.
'Sure is a pretty caterpillar!

Sherry

Here is a link that might be useful: Copper Underwing

Thanks Sherry!

I was secretly hoping for something more exotic but we're usually not that lucky this far north.

It has been a really slow butterfly year so far. I still haven't seen any eastern or black swallowtails.

I finally broke down and went to the monarch waystation at the lake to get monarch eggs.

We have tons of large common milkweed and it remains empty.

Maybe I'll start eating it so it doesn't go to waste ;)