Saccamoeba limna
From Martin Mrva, 2007

 

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.

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