Euglenophyceae: 
Euglenales
Mastigophora: Euglenida: Euglenina
Euglena tripteris
(Dujardin) Klebs, 1883
 
Species: 70-120 μm long, 
12-16 μm wide; elongate; 
three-ridged, rounded anteriorly and drawn out posteriorly; 
pellicle longitudinally striated; discoid chloroplasts numerous; two 
rod-shaped paramylon (paramylum) bodies (Kudo, 1966).  
90-100 μm long; 
body twisted, with three longitudinal ridges (How to know the protozoa, 1979).  
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Similar species --> >  E. oxyuris; 
			E. gigas
Euglena tripteris (Dujardin) Klebs 1883 (or E. oxyuris ?), 
cell body 110 μm long, 12 μm wide, 
x 640, Mizuko-kaizuka park, Fujimi city, Saitama Pref., Japan, May 9, 2004 by Y. Tsukii
 31 μm
 63 μm
 94 μm; x 640
Euglena tripteris (Dujardin) Klebs ??, 
cell body 100 μm long, 11 μm wide, 
x 640, Mizuko-kaizuka park, Fujimi city, Saitama Pref., Japan, May 9, 2004 by Y. Tsukii
 31 μm
 63 μm
 94 μm; x 640
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