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Pompholyxophrys punicea, 24 µm

Genus Pompholyxophrys Archer, 1869

Diagnosis: Medium-sized amoebae, typically with a spherical or near spherical body coated with numerous delicate and perforated siliceous perles; filopodia emerge through the layer of perles. Cells feed on algae and detritus and have been reported from freshwater habitats.

Literature: Page and Siemensma (1991); Patterson (1985); Rainer (1968), Roijackers and Siemensma, 1988.

Key to the species:

1 Perles spherical 2
Perles not spherical 3
2 Perles different in size, 1-6 µm, dried perles regular in outline P. punicea
Perles of the same size, up to 1.2 µm; dried perles irregular in outline P. exigua
3 Perles long, bone-shaped or rod-shaped P. ossea
Perles otherwise shaped 4
4 Perles ovoid, not strongly compressed P. ovuligera
Perles strongly compressed, flattened or discoid 5
5 Perles flattened, in outline circular or elliptical P. degrooti
Perles discoid, with slightly convex sides 6
6 Dried perles slightly torn, with a central hole; no pillars inside P. stammeri
Dried perles usually not deformed, sometimes with a small central hole; with pillars P. stellata
Pompholyxophrys punicea
Pompholyxophrys punicea, with branched filopodium
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