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:
|–||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|