Real size of the shell: 1,6-1,7 mm

Moitessieria simoniana (De Charpentier, 1848)

Stygobite species, present, in Italy, almost exclusively in the Ligurian Alps area. In Piemonte it is known for the Bear Cave and for some springs of the Maritime and Ligurian Alps.

Real size of the shell: 1,1-2,1 mm

Stygobite element, endemic of the southern Piemonte and the western Liguria, present in springs and in hypogean streams of karstic cavities. In Piemonte lives in the springs of the Bossea Cave that gush out in the Corsaglia torrent, about 30 m below the entrance of the cave, but it hasn't been found in the subterranean complex of this cavity.
Probably, it lives in the main branch of the hypogean stream of the Caudano Caves.

Real size of the shell: 1,1-2,0 mm

Stygophile and crenobiont species, common in all the western alpin chain, over all in springs, also in non karstic areas, and, often, in hypogean streams. In the Piemonte is known in some caves of the M. Fenera, for the "Boecc d'la Cüscia", and for the Caudano Caves.

Real size of the shell: 1,9-3,6 mm