Relevant Synonyms - Misidentification -  photos: J. J. van Aartsen - M. Recevik / La Conchiglia

SHORT DESCRIPTION Shell slender, conical, with flattened whorls. The surface of the shell has a smooth appearance, its microscopic spiral threads being detectable only at high magnification. Thin prosocline growth lines are also present. The columellar zone has no umbilicus, but a fold is evident. Base of the body whorl well rounded. The top-whorl is heterostrophic and makes an angle of about 130° with the shell axis ("type B" according to van Aartsen, 1987). color : white-yellowish with a brown spiral band near the suture. common size : 9-10 mm in length. DISTINGUISHING CHARACTERISTICS This species can be easily recognised by the slender-conical, white shell with a spiral brown band just above the suture, and the presence of a clear visible columellar fold. Like S. fasciata (Jickeli, 1882), this species could be confused with the Mediterranean Tiberia minuscula (Monterosato, 1880), but the general feature of the shell, and in particular the clear columellar fold, make the species distinguishable from the native ones. Furthermore, the shell of S. cinctella is more slender than that of S. fasciata, with a less conical shape and a more rounded base of the last whorl. BIOLOGY / ECOLOGY Pyramidellidae are ectoparasites, mainly of sedentary polychaetes and molluscs. habitat : unknown.

1st Mediterranean record Turkey, 1998 [1994]. DISTRIBUTION Worldwide : this species has a wide distribution in the Indo-Pacific, from Corea and Japan to the Persic Gulf and the Red Sea (Nomura, 1936). Mediterranean : recorded only from Yumurtalik harbour, southeastern Turkey in 1994 (van Aartsen and Recevik, 1998). ESTABLISHMENT SUCCESS Rare. speculated reasons for success : - MODE OF INTRODUCTION Unknown. IMPORTANCE TO HUMANS None.

KEY REFERENCES Nomura S., 1936. Pyramidellidae from Siogama Bay, Northeast Honsyu, Japan. Saito Ho on Kai Museum Research Bulletin, 10: 1-108. Nomura S., 1937. Additional Pyramidellidae from Siogama Bay, with remarks on the Molluscan fauna. Saito Ho on Kai Museum Research Bulletin, 13: 11-107. van Aartsen J.J. and Recevik M., 1998. Altre due specie indo-pacifiche rinvenute nel Mediterraneo. La Conchiglia, 30(286): 13-15.   FEEDBACK / COMMENTS TO AUTHORS

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