Species: 85-170 μm long,
10-20 μm wide;
highly plastic; stigma distinct; chloroplasts discoid with pyrenoid;
several small rod-shaped paramylon (paramylum) bodies (Kudo, 1966).
Body flattened, twisted, with longitudinal chloroplasts; flagellum less than 1/4 body length
(How to know the protozoa, 1979). Cell body cylindrical, 90-165 μm long, 9-18μm wide, posterior slightly pointed; chloroplast large disc-shaped, parietal, 30-50 in number, a pyrenoid without paramylon sheath located at the center; a flagellum 1/3 to 1/2 of the body length; nucleus ellipsoidal 14-20 x 8-12 μm; stigma 5-7 μm; paramylon bodies ellipsoidal or rod-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
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50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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