Taxa included

Judson, M.L.I. (1992b). The pseudoscorpion subgenus Chthonius (Sigmodactylus) Hadži, 1930: type fixation and consequent synonymy with Pseudochthonius Balzan, 1892 (Chelonethi, Chthoniidae). Bulletin of the British Arachnological Society 9: 64.