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:
Astasia sp. ?,
cell body 46 μm long, 7 μm wide, L/W=,
x 640, Hazama marsh, Tomita, Ashikaga city, Tochigi Pref., Japan, April 22, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Hazama marsh, Tomita, Ashikaga city, Tochigi Pref., Japan, April 22, 2006 by Y. Tsukii