Another great find! Imperial moth caterpillar!

Remember these cool moths?  Well happily for us, we (most likely) found one of their just as cool offspring!  Pictured below is an imperial moth caterpillar that left his/her sugar maple feeding grounds and is now searching for an underground pupation site. 

It's a BIG caterpillar!

The long setae and size are quite diagnostic.

 

The caterpillar really started to do some ground searching here.  Unfortunately the ground was too dry in this location so the cat moved on.  We're not sure where s/he pupated, but we're wishing this amazing invertebrate much luck!