Lobosea
:
Testacealobosia
: Arcellinida: Arcellidae
Arcella
hemisphaerica
Perty, 1852
Genus: Test
variable
, chitinoid;
binucleate
(Illustrated Guide, 1985).
Species:
30-70
μm diam.,
25-40
μm high; pseudostome round,
10-20
μm, invaginated
8-10
μm, short inverted rim; test finely areolar, yellow to brown (Illustrated Guide, 1985).
Arcella hemisphaerica
, test
μm long,
μm wide, by
K. Mikami
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