Genus: Elliptical body with a firm pellicle; dorsal side convex, ventral side slightly flat; "cytopharynx" with granules; two lateral chromatophores (chloroplasts) vary in color from green to blue-green, brown or rarely red; 1-3 contractile vacuoles anterior (Kudo, 1966). Cell body elongated ovoid or elliptical; cytopharynx conspicuous; three rows of ejectisome (trichocysts) (Yamagishi, 1999).
Species: Cell body 16-20 μm long, 8-10 μm wide; two almost equal flagella; color, dark umber to dark brown (Illustrated Guide, 1985). 20-30 micron; reservoir distinct; yellow to brownish-green chloroplasts; starch granules (How to know the protozoa, 1979). 30-60 μm long, 20-25 μm wide (Kudo, 1966).

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C. ovata ? 44 x 19 μm Japan, 199?	C. ovata cell μm Japan, 199?	C. ovata 36 x 18 μm Imori pond Myoko highland Niigata, 2004	C. ovata ? cell 36 x 19 μm nature obs. p. Kitamoto Saitama, 2005
C. ovata ? cell 39 x 21 μm near Akai wetland Aizuwakamatsu Fukushima, 2005	C. ovata ? cell 38 x 21 μm Futayo-no-ike Haguro mountain Yamagata, 2005	C. ovata ? cell 35 x 19 μm Hazama marsh Ashikaga Tochigi, 2006	C. ovata ? cell 30-33 μm Japan, 199?
C. ovata or Chroomonas ? 22.6 x 12.5 μm Kurobane Tochigi, 2001	C. ovata ? 14 x 8 μm Kurihashi Saitama, 2001

Similar genus -->> Chroomonas; Chilomonas;

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