Charpentieria dyodon alpina (Stabile, 1859)

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

Charpentieria dyodon alpina (Stabile, 1859)

Figs 40.3-40.4, 42.2

Distribution.

Charpentieria dyodon alpina is found in scattered populations along the Val di Lanzo, NW of Torino (Piedmont).

Specimens examined.

Italy, Piedmont, Torino, Margone, Val di Lanzo , Usseglio. 1500 m asl, 45°14'4.89"N, 07°12'18.90"E, leg. and det., 2 dissected spm .

External morphology of the genital organs

(Fig. 40 .3). The FO is almost as long as the V. The FDBC is slightly shorter than the BC+SDBC (SDBC+BC). The BC+SDBC is cylindrical and longer than the V with no clear distinction between the SDBC and the BC. The apex is round. The D is shorter than the BC+SDBC, thinner with a round apex. The V is as long as the first duct of the BC+SDBC. The PC is 2 × as long as the V. The PR is long and robust. The E is slightly longer than the P and thin.

Internal morphology of the genital organs

(Fig. 40 .4). The A and the P are smooth, with a very fine granulated sculpturing. The V shows many smooth longitudinal pleats. The smooth simple PP is simple, big, club-like with a round apex. Its base is partially connected to the ELP and transversally extends along the transition wall, narrowing the transition passage. The epiphallar formula is: PP(ELP). The E shows two main longitudinal moderately fringed pleats that proximally fade before the VD.

Figures

Figure 40. Charpentieria dyodon dyodon (S. Studer, 1820), Verbano 40.1 whole distal genital organs 40.2 internal distal part of genital organs. Charpentieria dyodon alpina (Stabile, 1859). Val di Lanzo, Usseglio 40.3 whole distal genital organs 40.4 internal distal part of genital organs.