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Spirotrichea: Hypotrichia: Euplotida: Euplotidae

 Euplotes sp.
Ehrenberg, 1830

Euplotes 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:

Euplotes or similar species, cell body 62 μm long, 52 μm wide, 5 or 6 dorsal ridges present, x 640, Near Sugata-no-ike (pond), Hitsuji-yama park, Chichibu city, Saitama Pref., Japan, July 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
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