Lobosea
:
Testacealobosia
: Arcellinida: Arcellidae
Arcella
sp.
Ehrenberg, 1832
Genus: Test
variable
, chitinoid;
binucleate
(Illustrated Guide, 1985). (Illustrated Guide, 1985).
Group: Discoides (Test flattened; height < 1/2 greatest diam.)
Species:
Arcella
sp., test
70
μm in diam., pseudostome
20
μm wide, x 640, Midori-no-ike (pond), Togakushi Forest Botanical Garden, Togakushi highland, Shinano town, Nagano Pref., Japan, June 12, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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