P. mckenziei Peck, 1977: 200 .

Holotype female in CNCI.

Type locality: Cueva de California, 46 road mi SW El Barretal, 4 mi NE Rancho Nuevo, Tamaulipas State, Mexico.

Distribution: Mexico: Tamaulipas State: known only from vicinity of type locality. Biology: Troglobite.