Charpentieria itala triumplinae Nardi, 2011

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 itala triumplinae Nardi, 2011

Figs 48.5-48.6, 49.1-49.2, 50.4, 50.5

Distribution.

This subspecific taxon of C. itala is endemic to the Central Alps. It is known from the type locality and few scattered localities in the Val Trompia area: Corna Blacca, Passo delle Portole, Cima Caldoline, Passo della Berga and other localities in the municipalities of Lavenone and Collio (Brescia, Lombardia, Italy), from 1500 m asl up ( Nardi 2011: 99-100).

Specimens examined.

Italy, Lombardia, Brescia, Lavenone , Cima Caldoline. 1700 m asl, 45°48'3.54"N, 10°24'20.12"E, G. Nardi leg. and det., 2 dissected spm .

External morphology of the genital organs

(Fig. 49 .1). The V is half as long as the FO. The FDBC is 2 × longer than the SDBC+BC. The BC+SDBC is club-like, short, with no clear distinction between the SDBC and the BC. The D is slightly longer than the SDBC+BC. The V is short and cylindrical. The PC is ~ 2 × as long as the V. The P is swollen. The transition between P and EP is clearly visible. The PR is short and robust. The E is much shorter than the P but wide in diameter.

Internal morphology of the genital organs

(Fig. 49 .2). The A is smooth. The V presents irregular pleats. The P is completely smooth. The PP is folded and elongated. It occupies 3/4 of the internal penial volume. The PP originates from the ER that is directly connected with the ELP. The epiphallar formula is: PP(ER(ELP)). The E shows two moderately fringed ELP. They proximally fade before the VD.

Remarks.

Nardi (2011: 99) roughly described the anatomy of the genital organs providing a sketch of a specimen from the same locality we had available as well. His description and depiction differ from our anatomical results by a remarkably shorter FO and a longer V, whereas the remaining genital external details seem to be similar (e.g., the penial complex). Nardi (2011: 99) did not provide any detail of the internal sculpturing of the genital organs, depicting only the pseudopapilla (named "papilla penis"). Moreover, the pseudopapilla appears slightly different according to our results, being it smooth instead of folded. However, its general conical shape and dimensions (in comparison with the volume of the penis) match with our results. The folding of its surface could be due to a reproductive/seasonal/physiological moment of the specimen at the time of collecting/fixation.

Figures

Figure 48. Charpentieria itala zalloti nom. nov., Udine 48.1 whole distal genital organs 48.2 internal distal part of genital organs. Charpentieria itala serravalensis (Nordsieck, 1963), Serravalle, Vittorio Veneto 48.3 whole distal genital organs 48.4 internal distal part of genital organs. Charpentieria itala trepida (Kaeufel, 1928), Cima Ora, Anfo 48.5 whole distal genital organs 48.6 internal distal part of genital organs.

Figure 49. Charpentieria itala triumplinae Nardi, 2011, Lavenone, Brescia 49.1 whole distal genital organs 49.2 internal distal part of genital organs. Charpentieria itala variscoi (Pini, 1883), Val Taleggio, Bergamo 49.3 whole distal genital organs 49.4 internal distal part of genital organs.