Taxa included

Coddington, J.A., Larcher, S.F. & Cokendolpher, J.C. (1990). The systematic status of Arachnida, exclusive of Acari, in North America north of Mexico. In: Kosztarab, M. and Schaefer, C.W. (ed.) Systematics of the North American insects and arachnids: status and needs Virginia Polytechnic Institute and State University, Blacksburg: 5–20.

Taxon
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 11, Mastigoproctus giganteus (Lucas)
Mastigoproctus tohono Barrales-Alcalá, Francke and Prendini, 2018 (Uropygi: Thelyphonidae) 11, (part), Mastigoproctus giganteus (Lucas)
Mastigoproctus floridanus Lönnberg, 1897 (Uropygi: Thelyphonidae) 11, (part), Mastigoproctus giganteus (Lucas)