Genus: Cell body naked (without cell wall or lorica); oval or elliptical; dicentrically symmetrical; 2 equal-length flagella;
chloroplast bowl-shaped or parietal plate, often colored red or orange owing
to excess carotenoid pigments; stigma present in most species; 2 anterior contractile vacuoles;
fresh water (Illustrated Guide, 1985).
Species:
cf. D. salina (Dunal) Teodoresco: 16-24 μm
long, 10-13 μm wide; broadly ovoid,
ellipsoidal or cylindrical; central region sometimes constricted; bowl-shaped chloroplast
(Illustrated Guide, 1985).