• Taxonomy (ITIS)
• Length: 50-60 mm
Arcella is a beautiful, testate (shelled) amoeba. The
is circular, transparent, with a central aperture (hole). It's color is light yellow when young
and its getting darker while aging. Usually, Arcella has two, sometimes more nuclei (visible
well using phase contrast). Arcella can often be found among detritus, usualy
only empty tests.
• Similar genera: