Species: Cell body ovoidal or elongated ellipsoidal, both ends rounded, 42-58 μm long, 12-18 μm wide; euglenoid movement rare; 10-16 chloroplasts saucer-shaped with wavy margin, a pyrenoid covered with paramylon sheath located at the center; locomotive flagellum half of the cell body; nucleus ellipsoidal, 12 x 10; eyespot (stigma) 5 μm long (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

31 μm 63 μm 94 μm; x 640