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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T. pulcherrima v. pulcherrima 22 x 13 μm Shimo-muneoka Shiki Saitama, 2004	T. pulcherrima v. latior ? 27 x 18 μm Izumi Namegawa Saitama, 2004	T. pulcherrima v. latior ? 27 x 19 μm Nanbata castle p. Fujimi Saitama, 2005	T. pulcherrima v. latior ? 23 x 13.5 μm Kashibaru m. Karatsu Saga, 2008
T. pulcherrima v. minor 18 x 9.5 μm Hanasaki water p. Kazo Saitama, 2005	T. pulcherrima v. minor 17 x 11 μm Kitamoto nature o.p. Kitamoto Saitama, 2005	T. pulcherrima v. minor ? or T. abrupta ? 18 μm Japan, 1998

Similar species -->> T. cylindrica (elongated cylindrical, smooth); T. abrupta (cylindrical/ellipsoidal, dotted); T. lacustris (elongated cylindrical, dotted);

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