![]() Species: 40-70 μm long (Kudo, 1966); 20-80 μm long (Illustrated Guide, 1985); 20-70 μm long (How to know the protozoa, 1979). 22-70 μm long, 10-20 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977). Anterior flagellum nearly the same as the cell body in length; 54-81 μm long, 15-25 μm wide (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
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