Rotosphaerida Rainer, 1968


Diagnosis: Aciliate predominantly spherical or flattened amoebae from which elongated actin-based filopodia extend; with flat discoid mitochondrial cristae; uninucleate or polynucleate (with few nuclei); free-living phagotrophs that feed on bacteria, cyanobacteria and algae.
Some sorocarpic, e.g. F. alba; some have symbionts, e.g. N. thermophila, Fonticula, Nuclearia, Parvularia.
Incertae sedis Rotosphaerida: Pompholyxophrys, Lithocolla, Vampyrellidium, Pinaciophora, Rabdiophrys, Rabdiaster.

Pinaciophora fluviatilis, pores visible – fountain of the Royal Palace het Loo, the Netherlands

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Raphidocystis glabra

August 2, 2019

after Zlatogursky et al., 2018 Raphidocystis glabra Dürrschmidt, 1985 Diagnosis: Periplast 40-50 μm in diameter; spine-scales 4.6–15 μm; plate-scales 6-7 × 3-3.5 μm; tiny teeth

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Raphidocystidae

August 1, 2019

Raphidocystidae Zlatogursky, 2018 Diagnosis: centrohelids with monolayered plate-scales covering cell surface. Plate-scales with a hollow inflected margin. Sometimes trumpet-shaped or tubular spine-scales present, forming an

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Planhoogenraadia liboica

July 31, 2019

P. liboica – from Bonnet, 1979 Planhoogenraadia liboica Bonnet, 1979 Diagnosis: . Test relatively flat, with a dorsal convexity. Shell widest in the center. Aperture deep

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Deharvengia papuensis

July 22, 2019

Deharvengia papuensis, after Bonnet, 1979 Deharvengia papuensis  Bonnet, 1979 Diagnosis: Theca large, ovoid, very regular, colorless. Elliptical pseudostome bordered by a thick yellowish lip or

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