Spelaeodiscus obodensis Bole, 1965

Pall-Gergely, Barna, Deli, Tamas, Eross, Zoltan Peter, Reischuetz, Peter L., Reischuetz, Alexander & Feher, Zoltan, 2018, Revision of the subterranean genus Spelaeodiscus Brusina, 1886 (Gastropoda, Pulmonata, Spelaeodiscidae), ZooKeys 769, pp. 13-48 : 13

Spelaeodiscus obodensis Bole, 1965 Figures 11 , 12

Spelaeodiscus obodensis Bole, 1965: 350, plate 76, fig. D.

Spelaeodiscus (Spelaeodiscus) obodensis - Gittenberger 1969: 296-297, fig. 1.

Spelaeodiscus obodensis - Welter-Schultes 2012: 213. (partim: the photos show S. unidentatus specimens)

Type material.

Obodska pećina, Rij. Crnojevića, Mtg., September 1956, MZBI 1018 (2 adult and 3 juvenile/broken syntypes, photos were examined, Figure 12A ).

Material examined.

Vodna jama ( Lovćen), coll. Edlauer ex coll. Kuščer, NHMW 48543/2 (det. Gittenberger, 1973 Sep.); Same data, NHMW 49765/2; Montenegro, Ostrog , rocks below the upper parking lot, 820 m a.s.l., 42°40.534'N, 19°1.744'E, leg. A. Reischütz, P. L. Reischütz & N. Steiner-Reischütz, May 2017, REI/1 ; Montenegro, Ostrog , entrance of the penultimate parking lot, 770 m a.s.l., 42°40.510'N, 19°1.663'E, leg. A. Reischütz, P. L. Reischütz & N. Steiner-Reischütz, May 2017, NHMW 112365 (photographed shell, Fig. 11F-J ), REI/1 ; Montenegro, Ostrog , 1 km north from Hotel Sokoline on the new street to Podgorica, 630 m a.s.l., 42°39.498'N, 19°2.188'E, leg. A. Reischütz, P. L. Reischütz & N. Steiner-Reischütz, May 2017, REI/2 ; Montenegro, 500 m south of the bridge over the Sitnica river , north of Podgorica, 45 m a.s.l., 42°27.473'N, 19°10.825'E, leg. A. Reischütz, N. Reischütz & P. L. Reischütz, Apr. 2012, NHMW 112366/1 (photographed shell, Fig. 11K-O ), REI/2 ; Yugoslavia: Pečina u Peckom Brdu bg., above Začir, leg. L. Pintér & P. Subai, 20 Jul. 1972, HNHM 41127/2; Same data, HNHM 18062/3 (one of them is photographed, Fig. 11A-E ) ; Montenegro, Pečina u peckom Brdu bei Začir (Brdu-cave at Začir), leg. H. Schütt, 06.06.1978, HNHM 42402/3 .

Diagnosis.

A medium sized species with elevated spire, roughly sculptured protoconch, strong ribs on the teleoconch, and toothless aperture.

Description.

Spire elevated, shell low conical; protoconch consists of 1.25-1.5 whorls, roughly granulated/ ”hammered”, matte, not glossy; teleoconch with strong, equidistant ribs that are supported by fine periostracal filaments in fresh shells; rib density variable (43-76 ribs on body whorl), usually widely spaced; between main ribs some fine wrinkles discernible; entire shell with 3.75-4 whorls; aperture semilunar, toothless; peristome slightly thickened and expanded, especially in direction of the umbilicus; umbilicus funnel-shaped, relatively narrow.

Measurements. SW: 2.6-3.0 mm (median = 2.8 mm), SH: 1.6-1.9 mm (median = 1.7 mm), AW: 0.9-1.2 mm (median = 1.1 mm), AH: 1.0-1.2 mm (median = 1.1 mm), AA = 64-70°(n = 10; largest and smallest specimens of multiple populations measured).

Differential diagnosis.

The most similar species is S. dejongi , which usually has a lower spire, weaker ribs, and a glossy protoconch.

Variation among specimens.

This species is the most variable in terms of shell size and rib density.

Distribution.

This species is found northwest of the Shkodër Lake Basin, as well as in the Zeta River Valley between Podgorica and the Ostrog Monastery (Figure 4 ). The Albanian record given by Reischütz et al. (2013) and referred by Reischütz (2017c) is actually S. albanicus edentatus ssp. n. So far, no Albanian occurrence is known.

Conservation status.

As there are at least seven known locations and no reason to suppose that the habitat quality, habitat extent or population are deteriorating or extremely fluctuating, it was assessed as Least Concern (LC) by Reischütz (2017c).

Figures

Figure 4. Distribution of Spelaeodiscus Brusina, 1886 species.

Figure 11. Spelaeodiscus obodensis Bole, 1965. A-E Pecina u Peckom Brdu cave, above Zacir (HNHM 18062) F-J Montenegro, Ostrog, entrance of the penultimate parking lot (NHMW 112365) K-O Montenegro, 500 m south of the bridge over the Sitnica river (NHMW 112366).

Figure 12. Type sample of Spelaeodiscus obodensis Bole, 1965 (A) and Spelaeodiscus unidentatus unidentatus Bole, 1961 (B).