Rhabdostyla spheroides (Fromentel 1874)

— Fig. 4, M’

Epistylis spheroides Fromentel, 1874: 240, pl. IV, fig. 4

Rhabdostyla sphaeroides Kent, 1881 –1882: 666, pl. XXXIII, fig. 10

[ Rhabdostyla] (Rhabdostyla) sphaeroides Kahl, 1935: 678, pl. 129, fig. 16

Diagnosis: Size about 60µm. Robust peduncle, measuring about half the size of the body and enlarged proximally. Smooth pellicle. Peristomial disc with convex elevation when expanded, elevation almost forming a sphere. Curved and prolonged infundibulum. Long and robust oral ciliary. Found in freshwater environments.

Remarks: diagnosis compiled from the works of de Fromentel (1874), Kent (1881) and Kahl (1935).