Montenegrina laxa iba Nordsieck, 1972

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 : 52

Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina laxa iba Nordsieck, 1972 Fig. 21F

Montenegrina laxa iba Nordsieck, 1972: 30, plate 5, fig. 41. - Zilch 1981: 130, plate 13, fig. 23. - Nordsieck 2009: 73.

Diagnosis.

Shell medium, yellowish-corneous. Lower whorls smooth, upper ones finely striate. Neck weakly inflexed, densely costate. Basal and peripheral crests well recognizable. Peristome ovoid to somewhat angular, with simple margin. Lamellae superior and spiralis mostly do not overlap. Subcolumellaris and clausilium plate barely visible through the aperture. Lunella dorsolateral to lateral, basalis short. Subclaustralis shorter than the basalis, sulcalis residual or absent. Anterior plica superior weak, not connected to the lunella complex, rarely absent.

Dimensions

(in mm). Hs: 12.3-17.8 (holotype 16.2), Ws: 3.4-4.2 (holotype 3.7).

Type locality.

"Arzen-Durchbruch bei Ibë” = Albania, Tiranë District, gorge of the Erzen near Ibë.

Type material.

Type locality ("beim Krabapaß”), leg. Fuchs, holotype (SMF 201629a), paratypes (SMF 201629b/3, NHMW-E 28704/pl., NHMW-E 32270/30).

Other material.

Original series but not type (NHMW-E 34152, NHMW 87658, NHMW-K 54386); Albania, gorge of the Lumi i Erzenit, 290 m, 41.2598°N, 19.9676°E, leg. ZF, TN, EM, 17.iv.2014 (HNHM 99036); same locality, leg. ZE, ZF, KK, 11.iv.2001 (HNHM 85891); Gramsh District, Tërvol, gorge of the Përroi i Holtit, 250 m, 40.9261°N, 20.2232°E, leg. ZF, AH, TH, DM, 26.viii.2006 (HNHM 99629).

Distribution.

Central Albania. For a long time this taxon has been known only from the type locality, but a recently discovered population more than 30 km farther south indicates that it may have a wider, sporadic distribution (Fig. 23).