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.