New species yes and no -- I was concerned about the size difference and RC was kind enough to take a look; he pointed out that the structures visible in the pedipalp match P. convexum, which I had thought was a palearctic species only. But this species has also been reported for Alaska and Rod finds it in Washington, predominantly "in mountainous sites with rock talus".

I want to check one more angle and will report back later today.

-K

Here is what the palp looks like (a Norwegian specimen):


And here is our specimen: