Two new genera of valvatiform stygobiont snails (Gastropoda: Hydrobiidae) from the Iberian Peninsula

Two new genera and two new species of stygobiont gastropods from the Iberian Peninsula are described, including the first endemic genus from Aragón, and another one from Catalonia. Molecular analyses confirm them as being well separated from other previously known genera with similar shell morphology that have also been genetically analysed. These findings enlarge the list of stygobiont snails recently described from the Iberian Peninsula, pointing to an extreme richness of this type of malacofauna in its groundwater.