Stephanopogon
Stephanopogon Entz sen., 1884
- Stephanopogon apogon Borror, 1965 (ref. ID; 645)
- Stephanopogon colpoda (ref. ID; 3690) or Entz sen., 1884 (ref. ID; 3540, 3565)
- Stephanopogon mesnili Lwoff, 1923 (ref. ID; 3540)
Descriptions
Size 20 to 70 um, broad lancet-like shape, with a slight beak-like taper anteriorly. Right side with a marked sigmoid curve back from the mouth, left side slightly curved. Tapered caudally to a blunt end. Flat ventrally, arched dorsally. Contractile vacuole terminal. Up to 11 bundle-shaped nuclei. Newly excysted animals initially have 2 nuclei. The ventral ciliation consists of 6 kineties, 5 of which spiral left ward from front to back. They are cut off by one kinety that runs along the right edge of the body, and has cilia about 8 um long. The cilia of the other kineties are distinctly shorter, only 5 um. A striking feature is that all the kineties are in longitudinal furrows. The dorsal surface is furrowed in a right-ward spiral. The dorsal ciliation, however, is reduced to 3 suboral kinety fragments. St. apogon is a grazer, feeding on bacteria and algae. On the substrate locomotion is by crawling. (ref. ID; 645)
Type locality
The species was discovered by Borror (1965) in tidal marsh pools on the coast of New Hampshire. There is no record of its existence in other habitats. (ref. ID; 645)