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Oligohymenophorea: Hymenostomatia: Hymenostomatida: Tetrahymenidae

Tetrahymena sp.
Furgason, 1940

Tetrahymena Genus: Oral polykinetids straight, never sigmoid (Illustrated Guide, 1985). Small, ovoid or pyriform, anterior pointed; cytostome anterior 1/3 of body where an undulating membrane on the right and three small membranelles on the left; macrostome forms with large buccal ciliation; somatic ciliation complete; a contractile vacuole terminal; a spherical macronucleus central (Carey, 1992).

Tetrahymena sp., stock Tms-1c, axenic culture with PPYG medium (October 13 to November 19, 2004), cell body 51 μm long, 28 μm wide, x 400, x 640, Japan, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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Cell body 54 μm long, 35 μm wide, x 640
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