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Heliozoea: Actinophryida

 Actinosphaerium eichhornii
(Ehrenberg, 1840) Stein, 1857

Actinosphaerium Genus: Ectoplasm consists of large vacuoles in one or several layres; endoplasm with numerous small vacuoles; numerous nuclei; axopodia end in the inner zone of ectoplasm (Kudo, 1966).
Species: Cell body spherical, 200-1000 μm in diam.; ectoplasm vacuolated; endoplasm containing both granules and small vacuoles; several contractile vacuoles present; many nuclei located at the perphery of endoplasm.

Actinosphaerium eichhornii (Ehrenberg) Stein, cell body spherical, 220 μm in diam., x 200, x 400, Fujimitashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, October 6, 2007 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Actinosphaerium Actinosphaerium
Actinosphaerium Actinosphaerium Actinosphaerium Actinosphaerium Actinosphaerium
Cell body spherical, 90 μm in diam., x 400, x 640
Actinosphaerium Actinosphaerium Actinosphaerium
Actinosphaerium Actinosphaerium Actinosphaerium

Images of collecting locality: Fujimitashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, October 6, 2007 by Y. Tsukii

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