Family: Two long flagella, 1-2 chloroplasts and 1-2 contractile vacuoles present
Genus: Cell body naked, colorless (without chloroplasts), a contractile vacuole present, colony embedded in a gelatinous matrix of various shape (Starmach, 1985).
Species: Cell body oval, 8-12 μm long; flagella 2 to 3 times as long; colony about 50 μm high; fresh water (Kudo, 1966).
Images of collecting locality:
Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii