Genus: Body ovate in locomotion; body broader than long; anterior clear zone formed as a series of superimposed waves (Illustrated Guide, 1985). Body round with clear anterior margin formed by tongue-like waves that advance, one over another (How to know the protozoa, 1979).
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Unda sp.
40 μm φ
Japan, 199?
Unda sp.
22 μm φ
near Yamaguchi Univ.
Yamaguchi, 2004
