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Heliozoea: Actinophryida

Actinophrys sol
Ehrenberg, 1830

Actinophrys Genus (Ehrenberg, 1830): Spheroidal; cytoplasm vacuolated, especially ectoplasm; nucleus central; one to many contractile vacuoles; axopodia straight, axial filaments terminate at surface of the nucleus (Kudo, 1966).
Species: Ectoplasm vacuolated; a large central nucleus; diameter average 40-50 μm (Kudo, 1966).


Actinophrys sol, cell body spherical, 50-65 μm diam., ectoplasm vacuolated, x 400, Japan, 199? by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400


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