Taxa included

Benedict, E.M. (1978d). A status report of a biogeographical study of Oregon pseudoscorpions. American Arachnology 18: 13.

Taxon
Pseudotyrannochthonius incognitus (Schuster, 1966) (Pseudoscorpiones: Pseudotyrannochthoniidae) 13, Pseudotyrannochthonius incognitus (R.O. Schuster)