Genus: Pseudopods do not meld at bases during polypodial locomotion; pseudopods ridged; uninucleate (Illustrated Guide, 1985).
Species: Monopodal, 300-600 μm long; pseudopods, cylindroid, granular, with clear caps, longitudinal ridges; uroid, temporary, morulate; nucleus, discoid to polymorphic, often biconcave, 30-35 μm diam (Illustrated Guide, 1985). Up to 600 μm or more; one discoid nucleus, 30 μm, sometimes folded (How to know the protozoa, 1979).

Intact cells Japan, 199?	Intact cells Japan, 199?	Intact cells Japan, 199?	Intact cells Japan, 199?
strain A-2 Japan, 199?	strain B-2 Japan, 199?	strain SU4 Ibaraki, 199?	strain SU2 Ibaraki, 199?
Intact cells Okinawa, 199?	strain 97D Uruguay, 199?	Intact cells Japan, 199?
Feeding Japan, 199?	Star formation Japan, 199?	Cell division Japan, 199?	Cell division Japan, 199?
Silver-stained Japan, 199?	heat-extracted Japan, 199?	Abnormal ? Japan, 199?

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