Taxa included

Morikawa, K. (1952a). Three new species of false-scorpions from the island of Marcus in the West Pacific Ocean. Memoirs of Ehime University (2B) 1: 241–248.

Ditha (Paraditha) marcusensis (Morikawa, 1952) (Pseudoscorpiones: Chthoniidae) 243, figs 2, 5a, Verrucaditha marcusensis
Lechytia sakagamii Morikawa, 1952 (Pseudoscorpiones: Chthoniidae) 244, figs 3, 5b, Lechytia sakagamii
Geogarypus (Geogarypus) micronesiensis Morikawa, 1952 (Pseudoscorpiones: Geogarypidae) 245, figs 4, 5c, Geogarypus (Geogarypus) micronesiensis