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Litostomatea: Haptoria: Pharyngophorida: Actinobolinidae

 Actinobolina vorax
Wenrich, 1929

Actinobolina vorax Family & Genus: Body ovoid; tentacle-like processes contain toxicysts (Illustrated Guide, 1985). Cell body ovate or spherical; ciliation uniform; extensible tentacles present among cilia; contractile vacuole posterior; macronucleus curved band; fresh water (Kudo, 1966).
Species: 100-200 μm long; cell body ovoid, pale yellowish brown; cytostome anterior with short collar; about 30 rows of cilia and tentacles; tentaciles not knobbed; fresh water (How to know the protozoa, 1979).

Actinobolina vorax Wenrich, 1929, cell body ovoid (slightly flattened in these image by pressing with cover slide), yellowish brown, 144 μm long, both cilia and tentacles arranged in a row, tentacles not knobbed, cytostome anterior with short protrusion, a contractile vacuole posterior, fed on Oscillatoria, fresh water, x 400, x 640, a pond inhabited by a fish Tanakia tanago, Otawara City, Tochigi Pref., Japan, September 2000, 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
Cell body nearly spherical

Cytostome apical, a single contractile vacuole located at posterior end

Actinobolina vorax: 100-200 μm long; cell body ovoid, pale yellowish brown; cytostome anterior with short collar; about 30 rows of cilia and tentacles; tentaciles not knobbed; fresh water (How to know the protozoa, 1979).

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