Taxa included

Sakayori, H. (2009a). A new species of the genus Tyrannochthonius from the Izu Peninsula, central Honshu, Japan (Arachnida: Pseudoscorpionida: Chthoniidae). Edaphologia 84: 21–24.

Taxon
Tyrannochthonius chihayanus Sakayori, 2009 (Pseudoscorpiones: Chthoniidae) 21–24, figs 1–11, Tyrannochthonius chihayanus