Taxa included

Sato, H. (1988). [Seasonal fluctuations of some pseudoscorpions in Yokohama, central Japan]. Edaphologia 38: 11–16.

Taxon
Megachernes ryugadensis Morikawa, 1954 (Pseudoscorpiones: Chernetidae) 12, Megachernes ryugadensis
Tyrannochthonius japonicus (Ellingsen, 1907) (Pseudoscorpiones: Chthoniidae) 12, figs 1–2, Tyrannochthonius japonicus (Ellingsen)
Allochthonius (Allochthonius) opticus (Ellingsen, 1907) (Pseudoscorpiones: Pseudotyrannochthoniidae) 12, Allochthonius opticus (Ellingsen)
Microbisium pygmaeum (Ellingsen, 1907) (Pseudoscorpiones: Neobisiidae) 12, Microbisium pygmaeum (Ellingsen)
Pararoncus japonicus (Ellingsen, 1907) (Pseudoscorpiones: Syarinidae) 12, figs 1, 3, Roncus japonicus (Ellingsen)