Taxonomic revision of the rock-dwelling door snail genus Montenegrina Boettger, 1877 (Mollusca, Gastropoda, Clausiliidae) Author Feher, Zoltan Author Szekeres, Miklos text ZooKeys 2016 599 1 137 http://dx.doi.org/10.3897/zookeys.599.8168 journal article http://dx.doi.org/10.3897/zookeys.599.8168 1313-2970-599-1 8BEE967F7C6946928210A440AD8E2018 Taxon classification Animalia Stylommatophora Clausiliidae Montenegrina okolensis okolensis Szekeres, 2006 Fig. 24D Montenegrina apfelbecki okolensis Szekeres, 2006 in Eross et al. 2006 : 186, fig. 5. Montenegrina janinensis caesia (partim) - Nordsieck 2009 : 75. Diagnosis. Shell small to medium, elongate. In front view lamella inferior weakly emerged. Lunella dorsolateral. Sulcalis present. Anterior plica superior mostly absent. Clausilium plate partly visible through the aperture. Dimensions (in mm). Hs: 13.9-15.6 (holotype 13.9), Ws: 3.4-4.4 mm (holotype 3.4) (see type and other material). Type locality. "Theth valley" = Albania, Prokletije Mts, one of the mountains surrounding the Theth Valley (probably Mt. Jezerce ). Type material. "Theth valley", ex Nadai , ex Holzinger, collected by an unknown mountaineer, vii.1996, holotype (HNHM 94839). Other material. Albania, Malesia District, above the N side of the Qafa e Valbones , along the footpath between Rragam and Theth, 1850 m, 42.4068°N , 19.8122°E , leg. TD, ZE, ZF, DM, 06.x.2005 (HNHM 99613); same locality, leg. Adam , GP, Somay, 5.ix.2005 (HNHM 99614). Distribution. In the central part of the Prokletije Mts in northern Albania. The description of this subspecies was based on a single shell without precise locality and collector information. Accordingly, type locality was defined only as "Maja e Jezerces region" ( Eross et al. 2006 ). Recently the subspecies has been re-discovered near the Valbona Pass (Qafa e Valbones ), south of the Jezerce Summit. Notably, along the Theth to Rragam footpath that crosses the main mountain ridge, Montenegrina okolensis okolensis could be found only around its highest point, near to and above the pass, between 1760 and 1850 m (see also: Feher and Eross 2009 ) (Fig. 26). Figure 26. Distribution of Montenegrina okolensis and Montenegrina prokletiana sp. n. Montenegrina okolensis caesia (triangle); Montenegrina okolensis okolensis (inverted triangle),; Montenegrina prokletiana prokletiana ssp. n. (star); Montenegrina prokletiana kovacsorum ssp. n. (square). Remarks. Nordsieck (2009) considered okolensis a synonym of caesia Feher & Szekeres, 2006. New okolensis samples confirm the stability of its morphological differences from caesia , namely the elongate shell, deeper lunella and better developed sulcalis. Therefore we maintain it as a distinct subspecies.