Rhabdostyla ephemerae (Kahl 1935)

— Fig. 2, P

[ Rhabdostyla] (Rhabdostyla) ephemerae Kahl, 1935: 675, pl. 138, fig. 8

Epistylis (Rhabdostyla) ephemerae Kahl, 1935 — Stiller, 1971: 66, pl. 34, fig. H

Diagnosis: Size about 75 µm. Body variable in shape, but not very asymmetric. Short and thin peduncle. Pellicle with narrow striations. Elongated and sausage-shaped macronucleus, positioned longitudinally, surrounding the infundibulum. Oblique peristomial disc, with distinct protuberance at the margin. Robust peristomial collar. Contractile vacuole positioned in the upper quarter of the body, to the right of the infundibulum. Broad infundibulum. Found in the oral region of Ephemeroptera larvae.

Remarks: diagnosis compiled from the works of Kahl (1935) and Stiller (1971).