Cochlostoma (T.) adamii ( Paulucci, 1879 )

Zallot, Enrico, Kamchev, Panche, Schilthuizen, Menno, Fehér, Zoltán, Mattia, Willy De & Gittenberger, Edmund, 2024, Cochlostoma Jan, 1830 revised: an overview of the subgenus Turritus Westerlund, 1883 and its species (Caenogastropoda, Cochlostomatidae), European Journal of Taxonomy 927, pp. 1-163 : 48-52

Cochlostoma (T.) adamii ( Paulucci, 1879)

Figs 35 (red dots), 41–43

Pomatias adamii Paulucci, 1879a: 188 .

Syntypes

ITALY • 1 ♀; “ Pomatias adamii Paulucci , forma tipica, Tiriolo Calabria . 3 esempl. cambio col Sig. Clessin aprile 1879 che gli ha ricevuti dal Cap. Adami col nome di P. Scalarinum Villa ”; MZUF 13650 • 1 ♂; “ Pomatias adamii Paulucci var gilva, Tiriolo , Calabria. 3 esempl. cambio col Sig. Clessin 1879 che gli ha ricevuti dal Cap. Stefanini”; MZUF 10964 .

Other specimens

ITALY • 1- Mt Stella 2 (topotypical); 38.4659° N, 16.4392° E; 2009; Renda leg.; EZ0017 • 2- Mt Stella (topotypical); 38.4682° N, 16.4483° E; 2007; Niero leg.; EZ0018 • 3– Tiriolo (topotypical); 38.9495° N, 16.5103° E; 2007; Niero leg.; EZ0019 • 5- Mt Stella (topotypical); 38.4682° N, 16.4483° E; 2007; Niero leg.; EZ1065 • 6- Canolo ; 38.3128° N, 16.1993° E; 1986; Hallgass leg.; EZ1071 • 7- Gimigliano ; 38.9602° N, 16.5109° E; 1980; Pintér leg.; HNHM41106 .

Type localities

ITALY • “Monte Stella e Tiriolo, Calabria ”.

Description

SHELL. Closely spaced riblets on last part of protoconch. Teleoconch with two lines of reddish spots on whorls. Rather thin ribs barely weakening approaching aperture. Moderately strong lip with gently inwardly curved columellar lobe in many specimens only partially covering umbilicus.

MEASUREMENTS. 11 ♀♀: whorls=7.3–8.2, H= 6.8–8.9 mm, H/W= 2.58–2.76, roundness =0.11–0.14, ribs incl.= 58–65°, apert. incl. =15–26°, ribs/mm 1 st wh. =5–13, ribs/mm 4 th wh.=6–11.

FEMALE GENITAL ORGANS. As in C. (T.) cassiniacum .

Remarks

It has to be established if the populations living on the Sila and Aspromonte mountains in Calabria are a species on its own as C. (T.) adamii or just part of C. (T.) cassiniacum . The shell and female genital morphology are not sufficient to distinguish them and our molecular data are poor for this taxon (only H3 was amplified for samples from Monte Stella). We tentatively report it as a distinct species. It is labelled as “taxon inquirendum” in MolluscaBase (2023) and not considered in Welter-Schultes (2012). The type locality of the variety “ gilva ” is the same as for C. (T.) adamii . The variety gilva (MZUF-10964.9193) is the male of the nominotype, with a different color (the males are always darker, mainly on the upper whorls), being in average smaller than the females.

Additional note to clade A

Our data result in a rather confusing picture of the taxonomy of the entities which live on the mountain ranges which run North-South in Albania and are part of a well supported(PP=100%, BS= 99%)subclade. There are two different female genital morphologies, one presented in the topotypical specimens of C. (T.) mnelense and the other in the samples here assigned to the new species C. (T.) kontschani . The morphological features found in the topotypical mnelense have been observed in samples of populations living a few (EZ1182- Mali I Shentit) and more than 150 km (EZ1179-Strelcë to Selcë) to the south. Despite this similarity, in the phylogenetic trees the topotypical C. (T.) mnelense and these samples were more distantly related than mnelense with the new species kontschani . Therefore, we will present these samples as C. (T.) mnelense cf., waiting for more detailed studies of these populations. The sample “Orenjë” from a locality halfway between Mali I Shentit and Strelcë to Selcë has a female genital morphology similar to C. (T.) kontschani . This is in contradiction with the results of the molecular data where it is more related to the EZ1182- Mali I Shentit.

Figures

Fig. 35. Distribution of samples of clade A inhabiting the Apennine: green dots =Cochlostoma (T.) cassiniacum (Saint-Simon in Paulucci, 1878); red dots =C. (T.) adamii (Paulucci, 1879). Black center for the samples with amplified 16S.