Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina attemsi (Wagner, 1914)

Diagnosis.

Shell small, slender, light yellowish-corneous. All whorls smooth. Peristome attached, ovoid to angular, with somewhat swollen margin. Lamellae superior and spiralis overlap. In front view lamella inferior hidden or weakly emerged, subcolumellaris broadly-bent. Lunella dorsolateral to lateral, diffuse, not connected to the basalis. Subclaustralis absent or residual, sulcalis present. Anterior plica superior not connected to the lunella complex. Clausilium plate only barely visible through the aperture. Differs from similar-looking Montenegrina janinensis by the smaller, more elongate, entirely smooth shell, as well as the less emerged lamella inferior.