Genus: Similar to Ochromonas, but colourless; cells ovoid, free-swimming, or attached by a protoplasmic thread, or mutually attached to form spherical colonies; 1 contractile vacuole (Illustrated Guide, 1985).
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Spumella sp.
15-17 x 8 μm
Omoi river
Oyama
Tochigi, 2004
Spumella sp.3
& stock Cfn-1&6
13 x 8 μm
Funabashi
Chiba, 2003
Spumella sp.1
8-13 x 5-7 μm
Japan, 1999
Spumella sp.1
11 x 5 μm
Watarase river
Ashikaga
Tochigi, 2004
Spumella sp.1
10 x 7 μm
Japan, 1998
Spumella sp.1
10 x 7 μm
Saitama, 1999
Spumella sp.1
10 x 7 μm
Uruguay, 1999
Spumella sp.1
9 μm
Japan, 1998
Spumella sp.
7 x 4 μm
Japan, 1998
Movies 
Spumella sp.
μm
Chiba Park
Chiba, 2003
Spumella sp. ?
9 x 6 μm
Kisai town
Saitama, 2003
