Taxa included

Gardini, G. (2009a). Chthonius (C.) delmastroi n. sp. delle Alpi occidentali e del Piemonte e ridescrizione di Chthonius (C.) tenuis L. Koch, 1873 e di C. (C.) submontanus Beier, 1963 (Pseudoscorpiones Chthoniidae). Rivista Piemontese di Storia Naturale 30: 25–51.

Taxon
Chthonius delmastroi Gardini, 2009 (Pseudoscorpiones: Chthoniidae) 26–32, figs 1–15, 34, Chthonius (Chthonius) delmastroi
Chthonius ischnocheles (Hermann, 1804) (Pseudoscorpiones: Chthoniidae) 33, Chthonius ischnocheles (Hermann)
Chthonius tenuis L. Koch, 1873 (Pseudoscorpiones: Chthoniidae) 33–37, 43–51, figs 16–26, 34, Chthonius (Chthonius) tenuis L. Koch
Chthonius submontanus Beier, 1963 (Pseudoscorpiones: Chthoniidae) 37–41, figs 27–33, Chthonius (Chthonius) submontanus
Chthonius rhodochelatus Hadži, 1933 (Pseudoscorpiones: Chthoniidae) 39–40, Chthonius (Chthonius) rhodochelatus