Colpidium campylum
(Stokes, 1886) Bresslau
Genus: Elongate reniform (kidney-shaped); typically one postoral ciliary row; cytostome small, triangular,
1/4 from anterior end toward right side; macronucleus rounded; a micronucleus; a contractile
vacuole (Kudo, 1966).
Species: Cell body 50-70 μm long (How to know the protozoa, 1979; Kudo, 1966).
27-30 ciliary rows; preoral suture curved to right (Kudo, 1966).
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Colpidium campylum (Stokes, 1886) Bresslau 1922,
cell body 51-69 μm long, 21-26 μm wide,
x 400, x 640, Japan, 1999 by Y. Tsukii
100 μm
200 μm
300 μm; x 200
* Colpidium campylum (Stokes):
50-70 μm long
(How to know the protozoa, 1979; Kudo, 1966).
27-30 ciliary rows; preoral suture curved to right (Kudo, 1966).
Colpidium colpoda (Ehrenberg) (Tillina helia Stokes):
90-150 μm long,
cytostome about 1/10 body length; 55-60 ciliary rows;
preoral sutrue curved to left (Kudo, 1966).
Colpidium striatum Stokes ?:
50 μm long,
similar to C. campylum, contractile vacuole further posterior (Kudo, 1966).
Colpidium echini (Russo):
37-64 (55) μm long,
21-28 (25) μm wide;
24 ciliary rows; cytostome ate anterior third;
in the intestinal caeca of Strongylocentrotus lividus (Kudo, 1966).
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