Mauritanica scarificata (L. Pfeiffer, 1856) De Mattia & Reier & Haring, 2021

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

Mauritanica scarificata (L. Pfeiffer, 1856) comb. nov.

Figs 1.F, 37.1-37.5, 38.1-38.4, 39.8, 39.9

Clausilia scarificata L. Pfeiffer 1856: 185.

Clausilia scarificata - L. Pfeiffer 1859: 765.

Clausilia sacrificata - Benoit 1876: 152.

Clausilia confinata - Benoit 1881: 105.

Clausilia (Siciliaria) confinata Monterosato 1892: 28.

Siciliaria scarificata - Manganelli et al. 1995: 25.

Charpentieria scarificata - Beckmann 2004: 188.

Siciliaria scarificata - Welter-Schultes 2012: 342.

Siciliaria scarificata - Nordsieck 2013b: 7.

Siciliaria scarificata - Liberto et al. 2015: 482.

Charpentieria scarificata - De Mattia 2017k.

Charpentieria scarificata - MolluscaBase eds 2021.

Specimens examined.

Italy, Sicily, Marettimo, W of the town, path to Pizzo Falcone. 80 m asl, 37°58'11.08"N, 12°03'59.36"E, [Lab ID 2_1, COI: MW758915 , ITS2: MW757112, MW757111 ; Lab ID 2_2, COI: MW758916 ], leg. WDM, JM, 12.vi.2015. 29 live spm, 4 dissected spm .

Shell

(Figs 38 .1-38.4, 39.8-39.9). Shell mostly decollate; whorls ribbed, sutural papillae visible; dorsal keel indistinct ore missing; inferior lamella high; anterior upper palatal plica present, separated from or connected with upper palatal plica; palatal edge of clausilium plate distally receding, palatal edge distally somewhat or not bent upwards (as in Nordsieck, 2013b).

Measurements

(n = 35, decollate): shell height 18.5 ± 1.0, whorl width 4.6 ± 0.2, aperture height 4.0 ± 0.3, aperture width 2.9 ± 0.2.

External morphology of the genital organs

(Fig. 37 .1, 37.3). The FO is longer than the V (FO/V range 1.8-2.1). The VD is thin along its whole course. The FDBC is slightly longer than the BC+SDBC (FDBC/BC+SDBC range 1.1-1.2). The BC+SDBC is cylindrical to club-like and longer than the V (BC+SDBC/V range 1.3-1.4), with no clear distinction between the SDBC and the BC. The apex is big and round. The D is much longer than the V (D/V range 4.1-4.5) and longer that the BC+SDBC (D/BC+SDBC range 1.4-1.5), thinner than the BC+SDBC and with a small and round apex. The V is V-shaped with a narrow distal part next to the A. The A is large. The PC is longer than the V (P+E/V range 3.0-3.3). The PR is short and robust. The E is longer than the P (E/P range 1.2-1.3), gradually shrinking and turning into the VD.

Internal morphology of the genital organs

(Figs 37 .2, 37.4-37.5). The A is smooth. The P presents two or three big smooth longitudinal pleats that originate directly from the rings of the pseudopapilla. The fine structure of the wall is smooth. The PP is small, smooth and with a pointed apex. It originates from the first proximal ER. The E shows two to four main but smooth ELP that fade before the VD. The wall of the E is smooth. The V is from almost smooth to very finely granulated. The epiphallar formula is: 1ER+ 2ER+3ER(PP)+ELP.

Ecology.

Mauritanica scarificata comb. nov. is found in a variety of habitats: limestone walls and cliffs, isolated boulders, under rocks and among scree and rocky debris. The species is common and abundant throughout the Island of Marettimo. According to De Mattia (2017k) Mauritanica scarificata comb. nov. is considered Least Concern.

Distribution.

Mauritanica scarificata comb. nov. is endemic of the island of Marettimo.

Figures

Figure 1. Wagner's (1913, 1925) and Brandt's (1961) Siciliaria genital drawings A Siciliaria septemplicata, Wagner, 1913: plate 572, fig. 14 B Siciliaria grohmanniana grohmanniana, Wagner, 1925: plate 1, fig. 8 C Siciliaria calcarae calcarae, 1925: plate 3, fig. 25 D Siciliaria ferrox, Brandt, 1961: fig. 1 E overall Siciliaria / Sicania and Sicilian Mauritanica distribution F Siciliaria / Sicania and Sicilian Mauritanica distribution of taxa.

Figure 37. Mauritanica scarificata (L. Pfeiffer, 1856), comb. nov., Marettimo 37.1 whole distal genital organs 37.2 internal distal part of genital organs 37.3 whole distal genital organs 37.4 internal distal part of genital organs 37.5 detail of the pseudopapilla. Mauritanica perinni polygyra (O. Boettger, 1879), Tunisia, Zaghouan 37.6 whole distal genital organs 37.7 internal distal part of genital organs 37.8 - 37.9 spermatophore 37.10 cross section of the spermatophore.

Figure 38. Mauritanica scarificata (L. Pfeiffer, 1856), comb. nov., Marettimo 38.1 shell 38.2 shell 38.3 detail of the aperture 38.4 clausiliar plate double side. Mauritanica perinni polygyra (O. Boettger, 1879), Tunisia, Zaghouan 38.5 shell 38.6 shell (picture courtesy of Claude and Amandine Evanno).