Species: Cell body fusiform (spindle-shaped), posterior tapered into a long cauda, 60-84 μm long, 15-22 μm wide; active euglenoid movement; 9-15 chloroplasts saucer-shaped with a slight wavy margin, each containing a pyrenoid covered at both sides with paramylon sheath; a flagellum about 2/3 of body length; nucleus spherical, 12 μm in diam.; stigma (eyespot) 5-6 μm in diam. (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

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E. caudata μm Japan, 199?	E. caudata ? or E. rostrifera ? 106 x 21 μm Mizumoto Park Tokyo, 2001	E. caudata ? 86 x 14 μm Mihashi Park Saitama, 2002	E. caudata ? 65 x 13 μm Mihashi Park Saitama, 2002
E. caudata ? 60 x 17 μm Entsu-ji Kawashima or Kawajima Saitama, 2002	E. caudata 55 x 11 μm Tatebayashi Gunma, 2001	E. caudata ? 46 x 8.5 μm Iwajuku Gunma, 2001	E. caudata ? μm Naruto Chiba, 2003
E. caudata ? μm Motono Chiba, 2003	E. caudata ? 78 x 20 μm Osato Saitama, 2004	E. caudata ? 50-65 x 12-13 μm Kami-muneoka Shiki Saitama, 2004	E. caudata ? 50 x 12 μm Torinome Kasen p. Kuroiso Tochigi, 2004
E. caudata ? 55 x 12 μm Omotsubo marsh Tetta-cho Okayama, 2004	E. caudata ? or E. viridis ? 33 x 8 μm Saitama, 1999	E. caudata ? 75 x 10 μm Shiba river near Owada p. Saitama, 2005	E. caudata ? 76 x 13 μm Nanbata castle p. Fujimi Saitama, 2005
E. caudata ? 72 x 18 μm Shide-numa Kita-kawabe Saitama, 2005	E. caudata ? 60 x 18 μm near Akai wetland Aizuwakamatsu Fukushima, 2005

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