Montenegrina hiltrudae desaretica, Feher, Zoltan & Szekeres, Miklos, 2016

Feher, Zoltan & Szekeres, Miklos, 2016, Taxonomic revision of the rock-dwelling door snail genus Montenegrina Boettger, 1877 (Mollusca, Gastropoda, Clausiliidae), ZooKeys 599, pp. 1-137 : 39-41

Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina hiltrudae desaretica ssp. n. Fig. 19E

Montenegrina sattmanni sattmanni - Erőss et al. 2006: 206.

Diagnosis.

Medium-size subspecies with costate shell, attached peristome, and non-overlapping lamellae superior and spiralis.

Description.

The light greyish-corneous shell of 8½ to 10½ whorls is tumid, with relatively large aperture. All whorls are more or less costate, more distinctly toward the apex. The neck is not or only very weakly inflexed, its ribs become sharper and near the aperture. The basal crest is weak, the peripheral one is not recognizable. The aperture is almost circular, its broadly attached margin is somewhat swollen and deflexed. The lamella superior is low but long, it does not overlap with the spiralis. In front view the lamella inferior is moderately emerged, the end of the broadly-bent subcolumellaris is mostly visible. The short and broad lunella is dorsal-dorsolateral, it is connected to the often weak basalis. The subclaustralis is absent, the sulcalis is rudimentary. The anterior part of the plica superior is weak, not connected to the lunella complex. The clausilium plate is partly visible through the aperture.

Dimensions

(in mm). Holotype Hs: 17.6, Ws: 5.5, Ha: 4.5, Wa: 4.1; paratypes Hs: 15.0-18.9 (mean 16.9, S.D. 1.33), Ws: 4.4-5.9 (mean 5.3, S.D. 0.39), Ha: 3.8-5.2, Wa: 3.3-4.3.

Differential diagnosis.

The new subspecies resembles the nearby occurring Montenegrina hiltrudae sattmanni , but can be distinguished from it by the costate shell, broadly attached peristome, non-overlapping lamellae superior and spiralis, as well as the reduced subclaustralis, sulcalis and anterior plica superior. From all other Montenegrina hiltrudae subspecies differs by the combination of an attached peristome and costate lower whorls.

Type locality.

Albania, Korçë District, cave temple ca. 2 km S of Glloboçeni, at the Prespa Lake, 850 m, 40.8422°N, 20.9616°E.

Type material.

Type locality, leg. ZE, ZF, JG, 30.vi.2015, holotype (NHMW 111250), paratypes (NHMW 111251/20+5a+11aj, HNHM 99690/25, GR/25, SZ/5); same locality, leg ID, 23.ix.2013, paratypes (DED/17).

Other material.

Albania, Korçë District, 1 km NE of Liqenas, Sveti Atanas i Veliki Antoni Church, 850 m, 40.7919°N, 20.9152°E, leg. ZE, ZF, JG, 28.vi.2013 (HNHM 99587); same locality, leg. ZE, ZF, JK, DM, 2.vii.2003 (HNHM 94901); Liqenas, 860 m, 40.7891°N, 20.9072°E, leg. ZE, ZF, JK, DM, 2.vii.2003 (HNHM 94898); Ishull i Vogël, E of Liqenas, 860 m, 40.7915°N, 20.9324°E, leg. ZF, LT, 17.viii.2007 (HNHM 99572).

Etymology.

The new taxon is named after Desaretia, the ancient Roman name of the Ohrid–Prespa region.

Distribution.

Prespa Lake area. Apart from the type locality, it was also found in the vicinity of Liqenas (Fig. 20).

Remarks.

Formerly the Liqenas population was mentioned by Erőss et al. (2006) as differing from the typical Montenegrina hiltrudae sattmanni by the stronger apical sculpture. However, more recent morphological and distribution data suggest that the populations around Liqenas belong to Montenegrina hiltrudae desaretica , but differ from its typical form by the weaker sculpture and the occasionally connected anterior plica superior.