Taxa included

Goddard, S.J. (1979a). The population metabolism and life history tactics of Neobisium muscorum (Leach) (Arachnida: Pseudoscorpiones). Oecologia 42: 91–105.

Taxon
Obisium muscorum Leach, 1817 (Pseudoscorpiones: Cheliferidae) 92–104, figs 1, 3, Neobisium muscorum (Leach)
Chthonius orthodactylus (Leach, 1817) (Pseudoscorpiones: Chthoniidae) 100–104, Chthonius orthodactylus (Leach)