Taxa included

Muchmore, W.B. (1980e). Three new olpiid pseudoscorpions from California (Pseudoscorpionida, Olpiidae). Pan-Pacific Entomologist 56: 161–169.

Taxon
Hesperolpiidae Hoff, 1964 (Pseudoscorpiones) 161, Hesperolpiini Hoff
Olpiidae Banks, 1895 (Pseudoscorpiones) 161, Olpiidae Banks
Hesperolpium slevini (Chamberlin, 1923) (Pseudoscorpiones: Hesperolpiidae) 162–164, figs 1–3, Hesperolpium slevini (Chamberlin)
Hesperolpium andrewsi Muchmore, 1980 (Pseudoscorpiones: Hesperolpiidae) 164–165, fig. 4, Hesperolpium andrewsi
Garypinidae Daday, 1889 (Pseudoscorpiones) 165, Garypininae
Neoamblyolpium giulianii Muchmore, 1980 (Pseudoscorpiones: Garypinidae) 165–166, figs 5–6, Neoamblyolpium giulianii
Pseudogarypinus cooperi Muchmore, 1980 (Pseudoscorpiones: Garypinidae) 167–169, figs 7–14, Pseudogarypinus cooperi