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Euglenophyceae: Euglenales
Euglenida:

Astasia longa
Pringsheim, 1936

Astasia Genus: Only 1 flagellum emergent from canal, colourless; eyespot absent; cell body fusiform or elongated, plastic, with pronounced euglenoid movement; many species, mostly freshwater (Illustrated Guide, 1985).
Species: Cell body spindle in shape, posterior end slightly pointed, 55-60 μm long, 8 μm wide (fixed sample); a locomotive flagellum 1/3 0 1/2 of the cell body in length; paramylon bodies bar-shaped or ellipsoidal, small (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000). Cell body 70-96 μm long, 10-14 μm wide, two large paramylon bodies ring-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

Astasia longa or A. dangeardi ?, cell body 40 μm long, 9 μm wide, L/W=, x 640, drainage ditch near Gunma Prefectural Livestock Experiment Station (Chikusan-shikenjo), Kogure, Fujimi village, Gunma Pref., Japan, April 30, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Astasia Astasia Astasia Astasia Astasia Astasia

Astasia longa Pringsheim, 1936: Cell body spindle in shape, posterior end slightly pointed, 55-60 μm long, 8 μm wide (fixed sample); a locomotive flagellum 1/3 0 1/2 of the cell body in length; paramylon bodies bar-shaped or ellipsoidal, small (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000). Cell body 70-96 μm long, 10-14 μm wide, two large paramylon bodies ring-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000). Outline shape similar to that of Euglena gracilis (How to know the protozoa, 1979).

Astasia lagenula Schewiakoff: Cell body cylindroid with posterior end rounded, 45 μm long, 10 μm wide; a flagellum more or less longer than the body length; ovoidal paramylum granules (WPRNO).

Astasia klebsi :

Astasia dangeardi : Outline shape similar to that of Euglena rostrata (How to know the protozoa, 1979).

Astasia captiva :

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