Hi Jaguarondi! (nice name by the way), I have tried to find images of Ctenus inaja and Ctenus walckenaeri. Which according to the Wikipedia list are the only members of Ctenus that may be present in Peru. They did not list any Centroctenus present there. But the problem I have found is that they have listed many in Bolivia, Brazil, etc so I do not know if their range may spill over into Peru. I will try down the Centroctenus route for now and report back, many thanks
Not always that simple from images where there can be several similar species - I agree with jaguarondi, I would put both down as Ctenidae, 2 and 3 looking like a Phoneutria species, Phoneutria nigriventeror a close-ish species. This is a tricky group and you really need to see the male and female bits to distinguish between species.
Thank you both for your comments. I have spoken to a Ctenidae expert in South America, and she advises me that pic one is probably Ctenus as suggested by Jaguarondi. Or she suggested it could also be oe of the very common, but still undescribed species that are present over there. With the Phoneutria it appears only 3 species occur in that area, fera, reidyi and boliviensis.