I can tell you, it is much more skittish than my p. allenii. I call it Digger, since it can't leave well enough alone.
Here's a pic

I think that it might be a p. clarkii, but then from pictures I've seen, it could also be a c. destructor or c. quadricariinatus.
I haven't tried picking it up yet, I've only had it a few days, and don't want to stress it.