Stigmatica paestana paestana (Philippi, 1836)

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

Stigmatica paestana paestana (Philippi, 1836)

Figs 62.1-62.3, 64.1

Distribution.

The nominate subspecies is widespread in central and southern peninsular Italy [from Tuscany (Monte Argentario) and S. Abruzzo to N. Calabria] ( Nordsieck 2013a: 7).

Specimens examined.

Italy, Toscana, Grosseto, Porto Ercole , Monte Telegrafo. 600 m asl, 42°23'13.90"N, 11°10'3.98"E, A. Margelli leg. and det., 2 dissected spm .

External morphology of the genital organs

(Fig. 62 .1). The V is much shorter than the FO. The FDBC is as long as the SDBC+BC. The BC+SDBC is club-like in shape, with a more or less clear distinction between the SDBC and the BC. The D extremely long, much longer than the SDBC+BC and much thinner. The V is very short but wide in diameter. The PC is ~ 5 × longer than the V. The P is cylindrical. The transition between P and EP is clearly visible with a narrowing and the presence of the ER. The PR is long and robust. The E is slightly longer than the P and similar in diameter.

Internal morphology of the genital organs

(Figs 62 .2, 62.3). The V, the A and the P lack any macro-sculpturing. The internal surface shows a coarse fine granulation. The pseudopapilla is cylindrical with a smooth surface. The pseudopapilla originates from a weak ER that is not connected with the ELP. The E shows two moderately fringed ELP. They proximally fade before the VD. The epiphallar formula is PP(ER)+ELP.

Figures

Figure 62. Stigmatica paestana paestana (Philippi, 1836), Monte Argentario, Grosseto 62.1 whole distal genital organs 62.2 internal distal part of genital organs 62.3 cross section of the epiphallus. Stigmatica paestana intustructa (Westerlund, 1883), Balvano, Potenza 62.4 whole distal genital organs 62.5 internal distal part of genital organs.