Species: 80-125 μm long, 10-35 μm wide; cylindrical; anterior end a little narrowed and rounded; posterior end drawn out; spiral striae, made up of small knobs; many discoid chloroplasts; two ovoidal paramylon (paramylum) bodies; flagellum about 1/4 the body length; sluggish (Kudo, 1966). 80-180 μm long. Several varieties: var. suprema 140-180 μm, var. marchica, 85-165 micron, var. abruptacuminata, 130-145 μm (How to know the protozoa, 1979). 45-250 μm long, 5-35 μm wide (Illustrated guide, 1985). Cell body 70-96 μm long, 10-14 μm wide, two large paramylon bodies ring-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

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All knobs equal in size; all striae same in thickness
var. 1 43 samples 115-260 μm 1997-2007	var. 1 43 samples 115-260 μm 1997-2007	var. 1 43 samples 115-260 μm 1997-2007	var. 1 43 samples 115-260 μm 1997-2007
Large and small knobs present
var. 2 17 samples 100-190 μm striae/10 μm 1999-2007	var. 2 17 samples 100-190 μm striae/10 μm 1999-2007	var. 2 17 samples 100-190 μm striae/10 μm 1999-2007	var. 2 17 samples 100-190 μm striae/10 μm 1999-2007
E. spirogyra small variety or similar species ?
var. 3 18 samples 90-130 μm 2001-2006	var. 3 18 samples 90-130 μm 2001-2006	var. 3 18 samples 90-130 μm 2001-2006	var. 3 18 samples 90-130 μm 2001-2006
E. spirogyra or Lepocinclis ?
E. spirogyra ? or Lepocinclis ? 115 x 36 μm near Town Hall Shobu Saitama, 2004

Lepocinclis spirogyroides: Marin, B. et al., Protist 154: 99-145, 2003

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