Euglenophyceae: 
Euglenales
Mastigophora: Euglenida
Euglena deses
Ehrenberg 1833
 
Species: 85-170 μm long, 
10-20 μm wide; 
highly plastic; stigma distinct; chloroplasts discoid with pyrenoid; 
several small rod-shaped paramylon (paramylum) bodies (Kudo, 1966).  
Body flattened, twisted, with longitudinal chloroplasts; flagellum less than 1/4 body length 
(How to know the protozoa, 1979).   
Cell body cylindrical, 90-165 μm long, 9-18μm wide, 
posterior slightly pointed; chloroplast large disc-shaped, parietal, 30-50 in number, 
a pyrenoid without paramylon sheath located at the center; 
a flagellum 1/3 to 1/2 of the body length; nucleus ellipsoidal 14-20 x 8-12 μm; 
stigma 5-7 μm; paramylon bodies ellipsoidal or rod-shaped 
(An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).  
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Similar species ->> E. ehrenbergii
Euglena deses Ehrenberg 1833, 
cell body  μm long,  μm wide, L/W=, 
x 640, Tonbo-no-numa (Dragonfly pond, Takada-seki), Takadani, Isumi city, Chiba Pref., Japan, December 16, 2007 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
Euglena deses Ehrenberg 1833, 
cell body 155 μm long, 11 μm wide, L/W=14.1, 
x 640, Tonbo-no-numa (Dragonfly pond, Takada-seki), Takadani, Isumi city, Chiba Pref., Japan, December 16, 2007 by Y. Tsukii
 50 μm
 100 μm
 150 μm; x 400 : 
 31 μm
 63 μm
 94 μm; x 640
Images of collecting locality: 
Tonbo-no-numa (Dragonfly pond, Takada-seki), Takadani, Isumi city, Chiba Pref., Japan, December 16, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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