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: Large & ovoid; 145 μm long; with well-defined peristomial collar; dorsal surface sculptured with 8-10 grooves; peristome large, wide and triangular in shape, extending 2/3 cell length; 9 frontoventral, 5 transverse, 4 caudal cirri; macronucleus Y- or T- shaped (Carey, 1992).

50 μm 100 μm 150 μm; x 400

Euplotes woodruffi, stained with azure C & fastgreen, autogamy?, x 400, Japan 199? by Y. Tsukii
50 μm 100 μm 150 μm; x 400