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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 146 μm long, 13 μm wide, large paramylon bodies rod-shaped, 20-24 μm long, with smaller ones (8 or 4 μm long), x 400, x 640, Uruguay, November 1999, photo by Yuuji 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, cell body 145 μm long, 11 μm wide, x 400, x 640, Uruguay, November 1999, photo by Yuuji 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


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