I believe it is a P.c.deserticola. But it may be an intergrade between that and affinis. I lived in Artesia (between Roswell and Carlsbad) and had the same problem with affinis and sayi. One was found east of the Pecos River (3 miles from my house) and the other was found west of it. So I am assuming I found intergrades, but just called them based on where I found them.