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 70-100 μm long, 22-30 μm wide; peristome 32-40 μm wide; pellicle striated; a contractile vacuole anterior; stalk branching with segments (Kojima et al., 1995).

Similar Genus ->> Campanella

100 μm 200 μm 300 μm; x 200 : 50 μm 100 μm 150 μm; x 400

* Epistylis rotans Svec, 1897: cell body 70-100 μm long, 22-30 μm wide; peristome 32-40 μm wide; pellicle striated; a contractile vacuole anterior; stalk branching with segments (Kojima et al., 1995).

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).

Epistylis chrysemidis: 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).