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).
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