Saccamoeba limna Bovee, 1972
Diagnosis: In locomotion body usually broadest at its anterior end, with hyaline cap often obliterated. Uroid formed as a hyaline bulbus with short nonadhesive filaments. Body monopodial during changes of direction of locomotion. Vesicular nucleus, with central nucleolus. Cytoplasm finely granular with many very small bipyramidal crystals.
Dimensions: Length of the locomotive form 75–101 µm, breadth 25– 35 µm, L/B 2.14–4.04; nucleus about 10 µm in diameter.
Ecology: freshwater semi-permanent ponds with decaying vegetation in Florida (USA), freshwater aquarium in Bratislava (Slovakia).
Remarks: Differs from all Saccamoeba species by hyaline uroidal knob. Similar in dimensions and L/B ratio with S. lucens, but differs in high number of small crystals which are bipyramidal.