Phytomastigophora: Volvocida: Polyblephaeridina: Carteriiidae
Chlorophyta: Chlorophyceae: Dunaliellales
Polytomella parva
Pringsheim 1955
Genus (Aragoa): Cell body ovoid or pyriform with conical or pointed posterior end;
4 equal-length flagella inserted at the base of a papilla; cells colorless; eyspot present or absent;
1-layered cysts common; 2 anterior contractile vacuoles; cell division by longitudinal fission;
sexual reproduction isogamous to form a 4-flagellate zygote (Illustrated Guide, 1985).
Species:
Cell body narrowly egg-shaped; a small papilla present; no eyespot (John et al. 2002).
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Polytomella parva Pringsheim 1955,
cell body μm long, μm wide,
x 640, Near Chyokyu-ji (temple), Miyadera, Iruma city, Saitama Pref., Japan, May 2003 by Y. Tsukii
50 μm
100 μm
150 μm; x 400
* Polytomella caeca Pringsheim, 1937:
Cell body conical or elongated ovoid, tapered at posterior; four anterior flagella;
cell wall not contain cellulose; 2 contractile vacuole at the base of flagella; no chloroplasts;
no stigma; 17-20 x 9-12 μm;
fresh water (Inoki ed., 1981).
Polytomella agilis Doflein:
8-18 μm long;
cell body ovoid, not tapered at posterior; with stigma; fresh water (How to know the protozoa, 1979).
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