Taxa included

Schuster, R.O. (1962). New species of Kewochthonius Chamberlin from California (Arachnida: Chelonethida). Proceedings of the Biological Society of Washington 75: 223–226.

Taxon
Neochthonius stanfordianus Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) n/a, fig. 5, Kewochthonius stanfordianus (Chamberlin)
Hesperochthonius spingolus (Schuster, 1962) (Pseudoscorpiones: Chthoniidae) 223–225, figs 1–2, 7, 7a, Kewochthonius spingolus
Neochthonius amplus (Schuster, 1962) (Pseudoscorpiones: Chthoniidae) 225–226, figs 3–6, 6a, Kewochthonius amplus