Montenegrina perstriata radikae 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 : 69

Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina perstriata radikae Nordsieck, 1972 Fig. 27J

Montenegrina perstriata radikae Nordsieck, 1972: 32, plate 4, fig. 37. - Zilch 1981: 130, plate 14, fig. 32. - Nordsieck 2009: 74.

Diagnosis.

Shell medium to large, tumid, light corneous. All whorls smooth, lower ones nearly of the same width. Neck wrinkled-costate. Basal crest stronger than the peripheral. Peristome with swollen margin. Lamella superior weak, distant from the spiralis. In front view lamella subcolumellaris not or only barely visible. Lunella lateral, fused to the short basalis. Subclaustralis and sulcalis residual. Anterior plica superior absent or short and mostly fused to the lunella complex. Clausilium plate not visible through the aperture.

Dimensions

(in mm). Hs: 17.8-23.1 (holotype 19.7), Ws: 4.6-5.5 (holotype 4.9).

Type locality.

Macedonia, Radika gorge near Debar, at the bridge.

Type material.

Type locality, leg. H. Nordsieck, 29.viii.1971, holotype (SMF 221050), paratypes (221051/1, SMNS-N 5510, SMNS-N 5511, NHMW-K 65045/7).

Other material.

Macedonia, Mavrovo District, Radika gorge, bridge 1 km N of the Sence junction along the Debar to Gostivar road, 880 m, 41.6994°N, 20.6478°E, leg. ZF, EH, KJ, HS, 14.x.2014 (NHMW 110430/MN/0086); same locality, leg. ZE, ZF, AH, 8.iv.2004 (HNHM 94917); Radika valley, 6 km from Trnica toward Debar, leg. LP, PS, AS, 12.vii.1972 (HNHM 31107).

Distribution.

Radika Valley in western Macedonia. Known to occur within a small range. All known occurrences are in the immediate vicinity of the type locality. A few kilometers farther upstream in the Radika Valley this taxon is replaced by Montenegrina perstriata subcristatula Nordsieck, 1977 (Fig. 25).