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).
Species:
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Euplotes sp. (minuta ?),
cell body 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, November 1999, photo by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
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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