Siciliaria grohmanniana ( Rossmaessler , 1836) s. l.

De Mattia, Willy, Reier, Susanne & Haring, Elisabeth, 2021, Morphological investigation of genital organs and first insights into the phylogeny of the genus Siciliaria Vest, 1867 as a basis for a taxonomic revision (Mollusca, Gastropoda, Clausiliidae), ZooKeys 1077, pp. 1-175 : 1

Siciliaria grohmanniana ( Rossmaessler, 1836) s. l.

Remarks.

Siciliaria grohmanniana forms a subclade with its sister group Siciliaria septemplicata (mean p distance 9.0%). The two subspecies of S. grohmanniana appear monophyletic in the mt tree (Fig. 4 ), albeit each represented by only a small number of samples: Siciliaria grohmanniana grohmanniana (one population with three samples), Siciliaria grohmanniana addaurae ssp. nov. (one population with three samples). Mean distance between the two subspecies was found to be 3.3%.

The shell of Siciliaria grohmanniana addaurae ssp. nov. was at first considered by Nordsieck (2013b: 6), as an "intermediate geographic form" of S. grohmanninana s. s. with "shell not decollate and whorls more weakly ribbed" and (2013b: 10) as: "a S. grohmanniana with characters of S. septemplicata " but without stating what these characters are. He introduced it as the: "Priola form from Priola (= Punta Priola) and San Lorenzo near Palermo" and depicted a shell ( Nordsieck 2013b: 12, fig. 8). The internal penial sculpturing of Siciliaria grohmanniana grohmanniana is similar to Siciliaria septemplicata (internal penial sculpturing showing a more or less fringed longitudinal pleats) although the sculpturing of epiphallus and vagina shows greater variability.

Figures

Figure 4. BI tree of based on the COI data set of Siciliaria, Sicania and related genera. BI posterior probability values (> 0.90) of major nodes are indicated.