Taxa included

Muchmore, W.B. (1984f). New cavernicolous pseudoscorpions from California (Pseudoscorpionida, Chthoniidae and Garypidae). Journal of Arachnology 12: 171–175.

Taxon
Aphrastochthonius grubbsi Muchmore, 1984 (Pseudoscorpiones: Chthoniidae) 171–173, figs 1–2, Aphrastochthonius grubbsi
Aphrastochthonius similis Muchmore, 1984 (Pseudoscorpiones: Chthoniidae) 173–174, fig. 3, Aphrastochthonius similis
Larca aalbui (Muchmore, 1984) (Pseudoscorpiones: Larcidae) 174–175, figs 4–5, Archeolarca aalbui