A revisional work is now prepared by Shimizu. Generic assignments of the representatives of the families are mostly follows Ricker & Ross (1975).
- Distribution: Honshu.
Japanese name: YUGAWA-OBI-SHITA-KAWAGERA
The first species looks similar to the M. makartchenkoi, the status is not uncertain at the present. The description of the undescribed species will be published after the problem of the first species is solved.
Stanger and Baumann (1993) reveiwed the genus on the world-wide scale, and provided the redescription of the following species.
- Distribution: Hokkaido *Records from Honshu look doubtful.
Japanese name: YAMATO-SHITA-KAWAGERA
Other Japanese names: ONASHI-KAWAGERA (Mats. 1904, 1907), NAMI-HIME-KAWAGERA (Mats. 1933), NAMI-ONASHI-KAWAGERA (Kohno 1957 for misnoma).
Images: Matsumura, 1904, fig. 42 (habitus); 1907, pl. 10-4 (habitus); 1933, pl. 5-8 (habitus).
(Last update 4/15/99)