world of amoeboid organisms

Clathrella ‘quadratus’

Clathrella ‘quadratus’

Diagnosis: Cell dice shaped, surrounded by six hyaline, colorless, bowl-shaped scales, loosely attached to each other. Filopodia extend through gaps between the scales. Pseudopodia branching and when attached to the substrate also anastomosing. One vesicular nucleus.

Dimensions: My measurements cell body c. 4-10 µm.

Ecology: clear fresh water bodies, oligotrophic and mesotrophic water types.

Remarks: I have seen this variation or species several times, also together with the typical foreli form and the very small ones. According to Penard this should be young ones, but I´ve never see any transition or intermediate stages.

Both specimens were present in the same wet mount from a sample from the Kortenhoefse plassen. Both specimens are on scale.
The location where I found the species above, just between the aquatic plants in the foreground.
Clathrella foreli
Clathrella foreli
Clathrella foreli
Clathrella foreli
Clathrella foreli
Several views of the same cubic specimen. The plasmabody is 10.4 µm in diameter. According to Penard (1902) this is a young specimen.
Ferry Siemensma, created March 2, 2019; last modified January 31, 2021
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