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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Euglena acus
Ehrenberg, 1830

Euglena acus Species: 50-175 μm long, 8-18 μm wide; body long spindle or cylindre, with a sharply pointed posterior end; numerous discoid chloroplasts; several paramylon (paramylum) bodies; nucleus central; stigma distinct; flagellum short, about one-fourth the body length (Kudo, 1966).
Similar species -->> Cyclidiopsis; E. limnophila;


Euglena acus Ehrenberg 1830, cell body 125 μm long, 10 μm wide, stigma distinct, sharply pointed posterior end, chloroplasts many, disc-shaped, 3-4 μm in diam., paramylon bodies rod-shaped, about 13 μm long, flagellum short, x400, x 640, Saitama Pref., Japan, May-June 1999 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euglena acus Euglena acus Euglena acus Euglena acus

Euglena acus, cell body 120 μm long, 11 μm wide, stigma distinct, sharply pointed posterior end, chloroplasts many, disc-shaped, 3-4 μm in diam., paramylon bodies rod-shaped, 12-14 μm long, flagellum short, x400, x 640, Saitama Pref., May-June 1999 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euglena acus Euglena acus Euglena acus


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