Taxa included

Matsuda, R. (1979). Abnormal metamorphosis and arthropod evolution. In: Gupta, A.P. (ed.) Arthropod phylogeny Van Nostrand Reinhold, New York: 137–256.

Taxon
Chthonius ischnocheles (Hermann, 1804) (Pseudoscorpiones: Chthoniidae) 201, (as Chthonius ischnocheleus [sic]), Chthonius ischnocheles (Hermann)
Chthonius orthodactylus (Leach, 1817) (Pseudoscorpiones: Chthoniidae) 201, Chthonius orthodactylus (Leach)