Taxa included

Yamauchi, T., Kadowaki, H., Yamamoto, T. & Sato, H. (2009). [Soil pseudoscorpiones collected from Oki Islands, Japan]. Hoshizaki Gurin Zaidan Kenkyu Hokoku 12: 281–284.

Taxon
Mundochthonius japonicus Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 282–283, Mundochthonius japonicus
Tyrannochthonius japonicus (Ellingsen, 1907) (Pseudoscorpiones: Chthoniidae) 283, Tyrannochthonius japonicus (Ellingsen)
Allochthonius (Allochthonius) opticus (Ellingsen, 1907) (Pseudoscorpiones: Pseudotyrannochthoniidae) 283, Allochthonius opticus (Ellingsen)
Microbisium pygmaeum (Ellingsen, 1907) (Pseudoscorpiones: Neobisiidae) 283, Microbisium pygmaeum (Ellingsen)