Genus: Ovoid to cylindrical; ciliation uniform; oral basket made up of double trichites which end up deep in ectoplasm; contractile vacuole terminal (Kudo, 1966). Brosse as 3 longitudinal files (Illustrated Guide, 1985). Body ellipsoidal, ovoid or cylindrical in shape; cytosotme apical, circular; cytopharynx equipped with well-developed double nematodesmata; somatic ciliation uniform, kinetosomes paired; macronucleus ovoid, reniform or ellongate; as many species descriptions are insufficient, many are indistinguishable (Carey, 1992).

P. moebiusi 5 clips 213 x 75 μm Japan, 1998

P. moebiusi 3 clips 210 x 105 μm Japan, 1998

P. viridis ? 2 clips μm Japan, 1998

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