Genus: Euglenas in a close fitting lorica; a single long flagellum extends through small opening; lorica with or without short collar; yellow to brown (How to know the protozoa, 1979). Lorica often possesses numerous spines, composed of ferric hydroxide impregnated with brown manganic compound (Kudo, 1966).
Species: (Illustrations of The Japanese Fresh-water Algae, 1977).
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Similar species ->> T. caudata; T. crispa;
T. hexangulata
v. hexangulata
34 x 18 μm
Mizumoto Park
Katsushika-ku
Tokyo, 2006
T. hexangulata
v. hexangulata
μm
Omine-numa
Minakami
Gunma, 2008
T. hexangulata
v. repanda
38 x 20 μm
Mizumoto Park
Katsushika-ku
Tokyo, 2006
