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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 157 μm long, 11 μm wide, paramylon bodies many, short but thick rod-shaped, 8-13 μm long, 1.8-4.5 μm wide, ellipsoidal nucleus located at the center of the cell body, x 640, Mihashi Park, Saitama city (Omiya), Saitama Pref., Japan, October 2002 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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