Siciliaria calcarae orlandoi Liberto, Reitano, Giglio, Colomba & Sparacio, 2016

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

Siciliaria calcarae orlandoi Liberto, Reitano, Giglio, Colomba & Sparacio, 2016

Figs 1.F, 20.1-20.4, 21.1-21.5, 24.11

Siciliaria (Siciliaria) calcarae orlandoi Liberto, Reitano, Giglio Colomba and Sparacio 2016: 371.

Specimens examined.

Italy, Sicily, Monreale, Bosco Ficuzza, Ponte Arcere , 470 m asl, 37°55'46.42"N, 13°23'5.22"E, [Lab ID 36_1, COI: MW758921 , ITS2: MW757132MW757133 ], W. De Mattia and J. Macor leg., 25.iv.2017. 4 dissected spm .

Shell

(Figs 21 .1-21.5, 24.11). Shell not decollate; whorls striated, with sutural papillae; dorsal keel little distinct; lateral lunella; principal plica not fused with lunella; inferior lamella moderately high; anterior upper palatal plica reduced, separated from a very short upper palatal plica; palatal edge of clausilium plate distally not receding, palatal edge distally more or less strongly bent upwards.

Measurements

(n = 12, not decollate). shell height 18.0 ± 0.7, whorl width 4.1 ± 0.1, aperture height 3.8 ± 0.2, aperture width 2.7 ± 0.1.

External morphology of the genital organs

(Fig. 20 .1). The FO is longer than the V (FO/V range 1.9-2.3). The VD is thin along its whole course. The FDBC is slightly shorter or as long as the BC+SDBC (FDBC/BC+SDBC range 0.9-1.0). The BC+SDBC is cylindrical to club-like and longer than the V (BC+SDBC/V range 3.3-3.6), with no distinction between the SDBC and the BC. The apex is big and round. The D is much longer than the V (D/V range 3.8-4.2) and longer that the BC+SDBC (D/BC+SDBC range 1.3-1.5), slightly thinner than the BC+SDBC and with a small rounded apex. The V is very short and cylindrical. The A is very large. The PC is longer than the V (PC/V range 3.0-3.3). The PR is long and robust. The ET is well visible. The E is slightly longer than the P (E/P range 1.2-1.3), almost abruptly shrinking and turning into the VD.

Internal morphology of the genital organs

(Fig. 20 .2). The A shows a set of transverse fleshy folds as they represent the continuation of the penial sculpture. The P presents a set of transverse, interrupted fleshy smooth pleats. These pleats are laterally surrounded by two longitudinal small smooth pleats. The fine structure of the wall is smooth. The PP is oval, smooth and with a round apex. The P-E transition presents a first distal ER, while both PP and ELP originate from the second proximal ER. The epiphallar formula is: 1ER+2ER(PP+ELP). The E shows two main longitudinal fringed pleats that fade before the VD. The wall of the E is finely granulated. The V is almost totally smooth but the wall is also finely granulated.

Ecology.

Following Liberto et al. (2016: 372): " Siciliaria calcarae orlandoi lives under the bark of dead trees and in the leaf litter of woods vegetating both in sandstone (Bosco del Cappelliere, Diga Scanzano) and calcareous (Alpe Cucco, Rocca Busambra) soils; in these two last localities S. calcarae orlandoi is found also on calcareous rocks into the woods". We collected this subspecies on Quercus sp. barks close to a small creek.

Distribution.

Siciliaria calcarae orlandoi in known to occur in the Nature Reserve of the Bosco della Ficuzza, Rocca della Busambra, Bosco del Cappelliere e Gorgo del Drago that is included in the wider Sicani Mountains Regional Nature Park ( Liberto et al. 2016: 372).

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 20. Siciliaria calcarae orlandoi Liberto, Reitano, Giglio, Colomba & Sparacio, 2016, Bosco Ficuzza 20.1 whole distal genital organs 20.2 internal distal part of genital organs. Siciliaria calcarae cruenta ssp. nov., Monte Gibilmesi 20.3 whole distal genital organs 20.4 internal distal part of genital organs.

Figure 21. Siciliaria calcarae orlandoi Liberto, Reitano, Giglio, Colomba & Sparacio, 2016, Bosco Ficuzza 21.1 shell 21.2 detail of the aperture 21.3 clausiliar plate double side 21.4 shell 21.5 detail of the aperture. Siciliaria calcarae cruenta ssp. nov., Monte Gibilmesi 21.6 shell 21.7 detail of the aperture 21.8 shell 21.9 detail of the aperture 21.10 view of the clausiliar plate.