Species: Chloroplasts numerous, aggregated into an axial star-like group; trichocysts fusiform, staining violet or 
blue with kresylblue; cell broadly spindle-shaped 
(25-50 μm long, 8-14 μm wide) 
(Zakrys, 1986).
Mucous body spindle-shaped (An illustrated guide to freshwater zooplankton in Japan, 2000). 
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