Euplotes

Spirotrichea: Hypotrichia: Euplotida: Euplotidae

Euplotes
Ehrenberg, 1830 (1831?)






Genus: Body ovoid, inflexible; ventral surface flattened, dorsal surface convex; peristome broadly triangular (Kudo, 1966). Cell body is ovoid, dorsoventrally flattened; dorsal surface may be equipped with some ornamentation; three groups of cirri (frontoventral, transverse & caudal); macronucleus C-shaped, "3"-shaped, or horsehoe-shaped (Carey, 1992).


Euplotes (minuta ?), 52 μm long, 45 μm wide, peristome over 2/3 of the body length, more than 7 frontoventral, 5 transverse cirri, x 400, x 640, Uruguay Nov. 1999, photo 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

* E. minuta Yocum, 1930: Cell body small and ovoid, not ornamented, 54 μm long; peristome over 2/3 of the body length; 10 frontoventral, 5 transverse, 4 caudal cirri; macronucleus C-shaped (Carey, 1992).

E. raikovi Agamaliev, 1966: Cell body small and ovoid, not ornamented, 60 μm long; peristome 2/3 of the body length; 7 or 8 frontoventral, 5 transverse, 3 caudal cirri; macronucleus approximately C-shaped (Carey, 1992).

E. bisulcatus Kahl, 1930-5: Cell body ovoid, almost spherical in shape, prominent dorsal ridges with double-edges, ventral surface similary ridged; 40 μm long; peristome 2/3 of the body length; 9 frontoventral, 5 transverse, 3 caudal cirri; macronucleus C-shaped (Carey, 1992).


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