Taxa included

Drewry, G. (ed.) (1989). Endangered and threatened wildlife and plants: animal notice of review. Federal Register 54: 554–579.

Taxon
Aphrastochthonius similis Muchmore, 1984 (Pseudoscorpiones: Chthoniidae) 566, Aphrastochthonius similis
Pseudogarypus orpheus Muchmore, 1981 (Pseudoscorpiones: Pseudogarypidae) 566, Pseudogarypus orpheus
Apochthonius paucispinosus Muchmore, 1967 (Pseudoscorpiones: Chthoniidae) 566, Apochthonius paucispinosus
Kleptochthonius (Chamberlinochthonius) henroti (Vachon, 1952) (Pseudoscorpiones: Chthoniidae) 566, Kleptochthonius henroti (Vachon)
Kleptochthonius (Chamberlinochthonius) hetricki Muchmore, 1974 (Pseudoscorpiones: Chthoniidae) 566, Kleptochthonius hetricki Muchmore
Apochthonius grubbsi Muchmore, 1980 (Pseudoscorpiones: Chthoniidae) 566, Apochthonius grubbsi
Apochthonius malheuri Benedict and Malcolm, 1973 (Pseudoscorpiones: Chthoniidae) 566, Apochthonius malheuri
Kleptochthonius (Chamberlinochthonius) orpheus Muchmore, 1965 (Pseudoscorpiones: Chthoniidae) 566, Kleptochthonius orpheus Muchmore
Kleptochthonius (Chamberlinochthonius) proserpinae Muchmore, 1965 (Pseudoscorpiones: Chthoniidae) 566, Kleptochthonius proserpinae Muchmore
Larca laceyi Muchmore, 1981 (Pseudoscorpiones: Larcidae) 566, Larca laceyi
Larca guadalupensis (Muchmore, 1981) (Pseudoscorpiones: Larcidae) 566, Archeolarca guadalupensis
Fissilicreagris imperialis (Muchmore, 1969) (Pseudoscorpiones: Neobisiidae) 566, Microcreagris imperialis
Larca aalbui (Muchmore, 1984) (Pseudoscorpiones: Larcidae) 566, Archeolarca aalbui
Larca cavicola (Muchmore, 1981) (Pseudoscorpiones: Larcidae) 566, Archeolarca cavicola
Chitrella regina Malcolm and Chamberlin, 1960 (Pseudoscorpiones: Syarinidae) 566, Chitrella regina