Genus: Body form barrel-shaped; with regularly arranged ectoplasmic plates; cytostome at
anterior end, surrounded by slightly longer cilia; often spinous projection at or near posterior end;
one or more long caudal cilia (Kudo, 1966).
Images of collecting locality:
a pond at Ashikaga flower park, Tomita, Ashikaga city, Tochigi Pref., Japan, April 22, 2006 by Y. Tsukii