Lobosea
:
Testacealobosia
: Arcellinida: Arcellidae
Arcella
arenaria
Genus: Test
variable
, chitinoid;
binucleate
(Illustrated Guide, 1985).
Group: Discoides (Test flattened; height < 1/2 greatest diam.)
Species:
Arcella
sp., cell body
μm long,
μm wide, L/W=
, x 640, Kareki-numa marsh, Nikko city (formerly Fujiwara town), Tochigi Pref., Japan, September 24, 2008 collected by Eizaburo Tsukii, photo by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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