Genus (Ehrenberg, 1831): Lorica attached aborally by stalk; no operculum (Illustrated Guide, 1985).
Similar to Vaginicola, but lorica stands on a short stalk; fresh or salt water (Kudo, 1966).
Species: Lorica about 55 μm high; fresh water (Kudo, 1966). Middle of cell body, a ring-like elevation.
Images of collecting locality:
a small pond near Yoshino park, Mitsukaido city, Ibaraki Pref., Japan, January 24, 2006 by Y. Tsukii