Family: Test rigid, chitinoid, often areolar, smooth; pseudostome ventral, round
(Illustrated Guide, 1985).
Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985).
A. gibbosa |
A. gibbosa |
Arcella sp. gibbosa ? |
Arcella sp. gibbosa ? |
Arcella sp. |
Arcella sp. |
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A. discoides x 640 |
A. discoides x 640 |
A. discoides x 640 |
Arcella sp. x 640 three nuclei |
A. vulgaris |
A. vulgaris |
Arcella sp. |
Arcella sp. |