Lithocolla globosa
Lithocolla globosa with its typical reddish color

Lithocolla globosa  Schulze, 1874

Diagnosis: amoeba surrounded by a layer of small irregular mineral grains; test flexible; with very fine smooth filopodia, without the granules so typical for true heliozoans; plasmabody usually with a reddish color. Nucleus vesicular with central nucleolus.

Dimensions:

Ecology: I have sampled ample specimens in a small shallow pond in a salt marsh on the Waddensea Island Schiermonnikoog and an other population in a small river in Neer, Limburg, the Netherlands. I don’t know if these two populations are the same species.
This species is known from freshwater, brackish and marine water.

Remarks: this amoeba can move fast, but doesn’t have a rolling movement like true heliozoans.
The taxonomic status of this species is uncertain. It is probably close related to nucleariid filose amoebae.

Lithocolla globosa
Lithocolla globosa, Fochteloërveen and naked Pompholyxophrys or Lithocolla

Lithocolla

Lithocolla globosa with some very fine filopodia visible

Lithocolla globosa

Lithocolla globosa, changing its shape.

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