Genus: Colonial; without lorica; less than 3 turns of oral cilia; swarmer with median scopula
(Illustrated Guide, 1985).
Stalk not contractile; body contractile.
Species: Cell body 75 μm long (Kahl, 1930).
* Epistylis hentscheli Kahl, 1935: Cell body trumpet-shaped, slightly curved; 108-234 μm long, 36-79 μm wide; peristome 50-94 μm wide; peristomal disc extends forward with slope; pellicle striated; macronucleus horseshoe-shaped (Kojima, et al., 1995).
230-250 μm long; extra collar around
peristome when expanded; cytopharynx large, deep; stalk branches dichotomously lacking
myonemes; fresh water (How to know the protozoa, 1979).
Epistylis cambari: Peristome 50 μm; common on gills of crayfish (How to know the protozoa, 1979).
Epistylis niagarae: Up to 180 μm long; on western painted turtle (How to know the protozoa, 1979).
Epistylis urceolata: 160 μm long; common on larvae of Chironomus (How to know the protozoa, 1979).