Family: Small, less than 50 μm; oblong to ovate; ridges faint or absent.
Genus: Body ovate in locomotion, longer than broad, with clear zone as anterior part; uninucleate (Illustrated Guide, 1985).
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Longer than broad
Clydonella sp.2
16 x 14 μm
Japan, 1998
Clydonella sp.1
15 x 11 μm
Japan, 1998
C. vivax
11-12 x 10 μm
Japan, 1998
C. vivax
9-13 x 11-13 μm
Japan, 1999
Clydonella ??
12 x 9 μm
Japan, 1998Broader than long
Clydonella sp.4
19-20 x 24 μm
or Vannella ?
Japan, 1998
Clydonella sp.5=4
12 x 14 μm
or Vannella ?
Japan, 1998
Clydonella sp.5=4
15 x 18 μm
or Vannella ?
Tachikawa
Tokyo, 2004
Clydonella sp.6
8 x 8 μm
Japan, 1998
Clydonella sp.
μm
Tsuchiura
Ibaraki, 2002
Clydonella sp.
15 x 17 μm
Kurome river
Asaka
Saitama, 2005Similar Genus -->> Vannella