The species of the genus Belgrandia (Caenogastropoda, Hydrobiidae) in the Iberian Peninsula

The species of the genus Belgrandia Bourguignat, 1869 from the Iberian Península are discussed. Four taxa were previously known, but some of them were considered as having subspecific level. A new species from Portugal is described: B. silviae spec. nov. Conchological, anatomical and radulae data are provided for all the species involved. The known geographic distribution area is given, reporting new localities for some of the species.