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Euglenophyceae: Heteronematales: Astasiidae

 Urceolus cyclostomus
(Stein) Mereschkowski (or Mereschkowsky) (Algaebase)

Urceolus Genus: Body colorless; plastic; flask-shaped; striated; a funnel-like neck; posterior region stout; a single flagellum protruded from funnel and reaches inward the posterior third of body (Kudo, 1966).
Species: 25-50 μm long; fresh water (Kudo, 1960; How to know the protozoa, 1979).

Urceolus cyclostomus, cell body μm long, μm wide, x 640, Shimaru-no-ike, Kejo-numa, Furukawa city, Miyagi Pref., Japan, November 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Urceolus cyclostomus Urceolus cyclostomus Urceolus cyclostomus

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