Rhabdostyla porculus (Penard 1922)

— Fig. 4, F’

[ Rhabdostyla] (Rhabdostyla) porculus Penard, 1922 — Kahl, 1935: 677, pl. 129, fig. 23

Epistylis (Rhabdostyla) porculus Penard, 1922 — Stiller, 1971: 71, pl. 36, fig. K

Diagnosis: Size about 135–155µm. Broad and cylindrical body. Smooth peduncle, measuring 30 to 35µm, cylindrical shaped with adhesive disc. Milky pellicle with little distinct striations. Wide peristomial disc, almost flat, but protruding from its highest point. Infundibulum reaches half of the body. Very wide contractile vacuole, located at the base of the peristomial collar, to the right of the infundibulum. Broad, relatively little elongated macronucleus, rarely “S” shaped, positioned longitudinally. Species found on debris in small numbers.

Remarks: compiled diagnosis from Penard (1922), Kahl (1935) and Stiller (1971).