Family Arcellidae Ehrenberg 1843

Diagnosis: Lobose testate amoebae with shell composed of granular chitinoid elements, giving the shell a finely granular appearance; pseudostome distinct, round.

 

Genus Arcella
Aperture smaller than half the shell diameter; two or more vesicular nuclei. 

Genus Antarcella
In contrast to Arcella only one ovular nucleus.

Recent posts

Microcorycia spec. 4

Microcorycia spec. , folded Microcorycia spec.? I found this specimen in a sample from moss on a fallen tree in a marsh in the Naardermeer,

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Microchlamys spec.

Microchlamys spec., the same cell in lateral view Microchlamys spec. Diagnosis: Shell relatively high compared with all described species. The diameter is twice the height.

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Excentrostoma

Infraorder Excentrostoma Kosakyan et al., 2016   Diagnosis: Testate amoebae with an eccentrically placed aperture; test organic with few or many xenosomes. Family Centropyxidae Jung, 1942  

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Longithecina

Infraorder Longithecina Kosakyan et al., 2016   Diagnosis: Testate amoebae with a more or less tubular or cylindrical test and a terminal aperture; test with

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