Taxa included

Cokendolpher, J.C. & Bryce, F.D. (1980). Arachnids (excluding Acarina and Pseudoscorpionida) of the Wichita Mountains Wildlife Refuge, Oklahoma. Occasional Papers of the Museum, Texas Tech University 67: 1–25.

Taxon
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 18, Mastigoproctus giganteus (Lucas)
Mastigoproctus cinteotl Barrales-Alcalá, Francke and Prendini, 2018 (Uropygi: Thelyphonidae) 18, Mastigoproctus giganteus (Lucas)