Taxa included

Banks, N. (1900). Synopses of North-American invertebrates. IX. The scorpions, solpugids and pedipalpi. American Naturalist 34: 421–427.

Taxon
Mastigoproctus floridanus Lönnberg, 1897 (Uropygi: Thelyphonidae) 422, (part), Mastigoproctus giganteus (Lucas)
Mastigoproctus tohono Barrales-Alcalá, Francke and Prendini, 2018 (Uropygi: Thelyphonidae) 422, (part), Mastigoproctus giganteus (Lucas)
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 422, Mastigoproctus giganteus (Lucas)