Lobosea
:
Testacealobosia
: Arcellinida: Arcellidae
Arcella
artocrea
Genus: Test
variable
, chitinoid;
binucleate
(Illustrated Guide, 1985).
Group: Discoides (Test flattened; height < 1/2 greatest diam.)
Species:
Arcella artocrea
(
Arcella catinus
?), test
180
μm in diam., pseudostome
30 x 33
μm, x 400, x 640, Sankaku-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 19, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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