Belgrandia silviae

Belgrandia silviae is a species of very small aquatic snail, an operculate gastropod mollusk in the family Hydrobiidae.
Distribution.
"Belgrandia silviae" is endemic to Portugal, where it is only known from the type locality, the spring of Alcabideque, 10 km to the south of Coimbra in the province of Beira Litoral.