Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina grammica Nordsieck, 1988

Diagnosis.

Shell very small to small, neck inflexed, with strong peripheral crest. Peristome attached, with swollen margin. Lamellae superior and spiralis do not or only occasionally overlap. In front view lamella inferior barely to moderately emerged, medium-bent subcolumellaris mostly not visible. Lunella broad, dorsolateral to lateral. Basalis absent or short, if present fused to or separate from lunella. Subclaustralis and sulcalis residual or absent. Anterior plica superior absent or weak and separate from the lunella complex. Differs from Montenegrina janinensis by the smaller, more conical and stronger sculptured shell, as well as the deeper inflexed neck and broadly-bent lamella subcolumellaris.