Very good article indeed. Extremely unlikely that it is a P crassifemur, as those were discovered in Brazil. I conferred with Abraxas earlier and he confirmed that the import he did receive came directly from Peru. I did notice something interesting in that article, though. There is a Pamphobeteus communis, Piza 1939. I wonder if this species has anything to do with P sp chicken spider. Very intriguing.could it be a Pamphobeteus crassifemur Bertani, Fukushima & Silva, 2008 here is a good read
http://www.mapress.com/zootaxa/2008/f/zt01826p058.pdf