Rhabdostyla commensalis (Mobius 1888)

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Fig. 1, J

[ Rhabdostyla] (Rhabdostyla) commensalis Mobius, 1888 — Kahl, 1935: 677–678, pl. 129, fig. 24

Diagnosis: Size about 62–70 µm. Elongated barrel shaped body. Gently striated pellicle. Peristome narrower than body diameter. Elevated peristomial disc. Very short peduncle, with an enlarged base and no transverse folds. Small, cylindrical to C-shaped macronucleus centrally arranged. Polykinety 3 single-rowed, terminate above Polykinety 1. Found on the polychaetes, Capitella capitata and Terebellides stromi .

Remarks: Diagnosis compiled from articles by Kahl (1935), Precht (1935) and Lu et al. (2020).