Montenegrina prokletiana prokletiana, 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 : 72

Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina prokletiana prokletiana ssp. n. Fig. 24F

Diagnosis.

Very small, slender subspecies with strongly inflexed neck, weak basalis, but long subclaustralis.

Description.

The light brown shell is very small and slender, its 8½ to 10½ whorls are separated by a deep suture. The lower three whorls are almost of the same width. Except the finely costate neck the entire shell surface is smooth. The strong inflection of the neck extends to the ventral side. The basal crest is weak, the peripheral one is strong. The light brown peristome is inflexed at the parietal side. The swollen and deflexed peristome margin is absent at the upper columellar side. The strong, projected lamella superior barely overlaps with the spiralis. The lamella inferior is weakly emerged, it turns horizontal before ending. In front view the medium-bent subcolumellaris is visible. Neither the inferior, nor the subcolumellaris reach the peristome margin. The dorsolateral lunella is not connected to the residual basalis. The subclaustralis is long and well developed, the sulcalis is present. The anterior plica superior is missing. The clausilium plate is not or only barely visible through the aperture.

Dimensions

(in mm). Holotype Hs: 10.8, Ws: 2.7, Ha: 2.6, Wa: 2.1; paratypes (HNHM 99491, n = 12): Hs: 9.1-11.0 (mean 9.9, S.D. 0.66), Ws: 2.4-2.8 (mean 2.6, S.D. 0.12), Ha: 2.3-2.7, Wa: 1.9-2.2.

Differential diagnosis.

The new subspecies differs from Montenegrina prokletiana kovacsorum ssp. n. by its smaller size, non-marginal lamellae inferior and subcolumellaris, as well as its well developed subclaustralis.

Type locality.

Albania, Tropojë District, Dragobi (14 km N of Bajram Curri), gorge of the Përroi i Thatë, 540 m, 42.4364°N, 19.9846°E.

Type material.

Type locality, leg. TD, ZE, ZF, DM, 6.x.2005, holotype (HNHM 99490), paratypes (HNHM 99491/3a+24, NHMW 111223/5a, MMM-B01326/25, ER/24, SZ/4); same locality, leg. ZB, Somogyi, 12.viii.2012, paratypes (HNHM 99492/13a+3aj).

Etymology.

The new taxon is named after the Prokletije Mts, the area where this species is distributed.

Distribution.

Northern Albania, Valbona Valley in the southern part of the Prokletije Mts. Known only from the type locality (Fig. 26).