Montenegrina sturanyana ostrovicensis, 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 : 99-100

Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina sturanyana ostrovicensis ssp. n. Fig. 34L

Diagnosis.

Small subspecies with often overlapping lamellae superior and spiralis, dorsolateral lunella, and missing basalis.

Description.

The small, light corneous shell is comprised of 8½ to 10 whorls, of which the last three are of comparable width. Except for the finely striate-costate neck the entire shell is smooth. The neck is weakly inflexed, the basal and peripheral crests are recognizable. The ovoid to somewhat angular peristome is attached, its margin is wide and swollen. The lamellae superior and spiralis often overlap. In front view the straight descending lamella inferior is weakly emerged. Through the aperture the medium-bent subcolumellaris can only be seen at an angle. The broad lunella is dorsolateral. The plica superior can reach forward farther than its fusion with the lunella. The basalis is absent, the subclaustralis is also absent or residual. The sulcalis is well developed. The anterior part of the plica superior is missing or weak, parallel to the principalis, separate from the lunella complex. The parietal edge of the clausilium plate is visible through the aperture.

Dimensions

(in mm). Holotype Hs: 14.0, Ws: 3.8, Ha: 3.7, Wa: 3.0; paratypes (HNHM 99501, n = 12): Hs: 11.9-16.6 (mean 14.0, S.D. 1.27), Ws: 3.7-4.4 (mean 4.0, S.D. 0.21), Ha: 3.0-4.0, Wa: 2.8-3.3.

Differential diagnosis.

The new subspecies differs from Montenegrina sturanyana sturanyana by the presence of the anterior plica superior, from Montenegrina sturanyana gropana by its less elongate shell and missing basalis, whereas from both of these by its less deeply positioned lunella.

Type locality.

Albania, Skrapar District, Mali i Ostrovicës, Maja e Faqekuqit, summit region, 2340 m, 40.5325°N, 20.4256°E.

Type material.

Type locality, leg. ZF, AH, TH, DM, 21.viii.2006, holotype (HNHM 99500), paratypes (HNHM 99501/32, NHMW 111228/4, HU/34, SZ/3).

Etymology.

The new taxon is named after the Ostrovica Mts.

Distribution.

Ostrovica Mts in Southern Albania. Known only from the type locality (Fig. 33).