Alvania bartolinorum
Amati & Smriglio, 2019
NE. Adriatic… Grazer and detritus feeder in the low infralittoral and the upper circalittoral.
 
« Teleoconch of 3.3-4.1 convex whorls, last whorl rather convex, suture impressed, canaliculated. Axial sculpture on the last whorl with 12-18 ribs narrower than interspaces, plus the varix, orthocline on the first whorls, opisthocline and slightly sinuose on last whorl, interrupted at the periphery. Spiral sculpture starting with 2 (ii, iV) cords. Last whorl with 8-11 spirals non-equidistant, 4-6 above the aperture, 1 at labial innsertion and 3-5 stronger, on the base. Spirals on last whorl slightly weaker than on previous whorls. Microsculpture on teleoconch of confused spiral microstriae and weak growth lines. umbilical chink absent or very narrow. Aperture large, ovate-squared, often flared anteriorly. Outer lip with sharp edge, weakly varicose, with 7-9 fine elongate internal denticles. Colour brown-beige with pinkish hue, first whorls often darker brown-orange, aperture often pink-violet. rarely monochrome brown or white. » – Amati & Smriglio: “Notes on some taxa of the Alvania lineata-complex with the descriptions of three new species from the Mediterranean Sea (Gastropoda: Rissoidae)”, Iberus vol. 37(1), Barcelona 2019, p.94; the differences with other morphologically close species are listed in this article.

Above and below:
40m deep, Krk island, Primorje-Gorski Kotar Comitat, N. Croatia. Original pictures provided by A. Nappo (IT).
(CC BY-NC-SA)
« Protoconch paucispiral, globose, consisting of 1.3-1.6 whorls, sculptured by partly fused and confused spiral series of granules… » – Ibid. The species is dedicated to Stefano Bartolini and Maria Scaperrotta (Florence), « for their kindness in making the materials from their collection always available for study, and for providing the type material. »

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