What caterpillar is this?

This caterpillar was found on the trunk of a dying Ash tree that SP cut down.


















For all intents and purposes, we were pretty sure by appearance not to touch it. Those hairy caterpillars can leave some nasty rashes. I have a video of it but I am not sure they will upload.



















The funny thing about it though, is that when we used the stick to move it back onto the wedge we noticed the red underbelly that was edged in some flecks of almost chartreuse green.


We took these picture on a piece of the ash wedges Shane cut out, because it was SO unbelievably camouflaged on the tree trunk. See!


















I'm still asking, what they heck will this guy turn into?