Taxa included

Shultz, J.W. (1992b). Step-coupled fluctuations in prosomal pressure may constrain stepping rates in whipscorpions (Uropygi). Journal of Arachnology 20: 148–150.

Taxon
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 148–150, figs 1–2, Mastigoproctus giganteus (Lucas)
Mastigoproctus tohono Barrales-Alcalá, Francke and Prendini, 2018 (Uropygi: Thelyphonidae) 314-328, figs 1a, 2-3, Mastigoproctus giganteus (Lucas)