Taxa included

Morikawa, K. (1972). Pseudoscorpions from Mt. Poroshiri-daké of the Hidaka Mountain Range, northern Japan. Memoirs of the National Science Museum of Tokyo 5: 33–35.

Taxon
Mundochthonius japonicus scolytidis Morikawa, 1954 (Pseudoscorpiones: Chthoniidae) 33, Mundochthonius japonicus scolyditis Morikawa
Bisetocreagris ezoensis (Morikawa, 1972) (Pseudoscorpiones: Neobisiidae) 34, figs 1a–c, Microcreagris ezoensis