Genus: With a vase-like chitinous lorica to which stalked or stalkless organism is attached; fresh or salt water; numerous species (Kudo, 1966). Transparent; ovoid; collar indistinct; in lorica (How to know the protozoa, 1979). Solitary or colonial; with firm lorica (theca) as a cup or tube; protoplast with 1 anterior flagellum encircled laterally by well-developed collar; contractile vacuoles posterior in fresh water species (Illustrated Guide, 1985). Species: lorica 31.7-50 μm long (Süßwasserflora von Mitteleuropa 1, Chrysophyceae und Haptophyceae, 1985).

31 μm 63 μm 94 μm; x 640

Images of collecting locality: Japanese garden, Aizu Recreation Park, Aizuwakamatsu city, Fukushima Pref., Japan, May 4, 2008 by Y. Tsukii