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Euglenophyceae: Sphenomonadales: Petalomonadaceae
Euglenida: Sphenomonadida

Sphenomonas teres
(F. Stein) G.A. Klebs

Genus: Two flagella with unequal length emerging from anterior canal, longer one directed anteriorly and held straight during swimming, shorter one curving laterally; cell body colorless, no eyespot, rigid, solitary, cylindrical, usually unflattened, one or more longitudinal lines or grooves present; hyaline inclusion in posterior half of the cell; freshwater and marine (Illustrated guide, 1985).
Species:


Sphenomonas teres ?, cell body spindle-shaped, 18 μm long, 8 μm wide, flagellulm 20 μm long, x 400, x 640, Saitama Pref., Japan, May-June 1999 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


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