Rhabdostyla cylindrica (Stiller 1933)

Souza, Pedro Mendes De, Rossi, Mariana Fonseca & Dias, Roberto Júnio Pedroso, 2024, Systematic review of the genera Rhabdostyla Kent 1880 and Orborhabdostyla Foissner et al. 2010 (Ciliophora, Peritrichia, Epistylididae), Zootaxa 5399 (3), pp. 201-230 : 214-215

Rhabdostyla cylindrica (Stiller 1933)

— Fig. 2 , M

[ Rhabdostyla] (Rhabdostyla) cylindrica Stiller, 1933 — Kahl, 1935: 678, pl. 133, fig. 25

Epistylis (Rhabdostyla) cylindrica Stiller, 1933 — Stiller, 1971: 65, pl. 34, fig. D

Diagnosis: Size about 25–28 µm long and 18–20 µm wid. Robust body with a rounded back. Peduncle measuring one-sixth the height of the body, thick and striated, end ending in an adhesive disk. Pellicle delicately striated. Peristomial collar slightly thickened. Peristomial disc flat, with almost no bulge. Infundibulum narrow reaching a third of the body. Contractile vacuole on the left side of the infundibulum. Macronucleus elongated and horseshoe-shaped, located in the anterior region of the body, tilted horizontally, found less frequently transversely. Several tiny food vacuoles in the cytoplasm. Epibiont of cladocerans of the species Leptodora kindti .

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

Figures

FIGURE 2. Schematic drawing of representatives of the Rhabdostyla genus. K: Rhabdostyla conipes; L: Rhabdostyla cyclopis, M: Rhabdostyla cylindrica; N: Rhabdostyla dixae; O: Rhabdostyla dubia; P: Rhabdostyla ephemerae; Q: Rhabdostyla fromentellii; R: Rhabdostyla globularis; S: Rhabdostyla hungarica.