Genus: Euglenas in a close fitting lorica; a single long flagellum extends through small opening;
lorica with or without short collar; yellow to brown (How to know the protozoa, 1979).
Lorica often possesses numerous spines, composed of ferric hydroxide impregnated with brown
manganic compound (Kudo, 1966).
Species: Lorica 10-20 μm diam. (How to know the protozoa, 1979). Lorica spherical, no collar, smooth; 16-20 μm diam. (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Trachelomonas volvocina Ehrenberg var. volvocina,
lorica spherical in shape, 19 μm in diam., surface smooth,
x 400, x 640, Uruguay, November 1999, photo by Yuuji Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
* T. volvocina Ehrenberg var. volvocina: Lorica 10-20 μm diam. (How to know the protozoa, 1979). Lorica spherical, no collar, smooth; 16-20 μm diam. (Illustrations of The Japanese Fresh-water Algae, 1977).
Trachelomonas volvocina Ehrenberg var. derephora Conrad: Lorica with short collar; 10-11 μm diam. (Illustrations of The Japanese Fresh-water Algae, 1977).