“…The valvatiform hydrobiid is a group of minute gastropods with depressed trochiform shells resembling those of the genus Valvata O. F. Müller, 1773. Owing to their limited dispersal abilities and high degree of habitat specialization, most springsnails are narrow-range endemics and face a high risk of extinction (Delicado et al, 2019;Radea et al, 2021). To date, five valvatoid species are known to occur in Morocco, four crenobiotic species that are micro-endemic to their type localities, namely Ifrania zerroukansis Glöer, Mabrouki and Taybi, 2020, Fessia aouintii Glöer, Mabrouki and Taybi, 2020, Islamia tiferitensis Glöer, Mabrouki and Taybi, 2020and I. karawiyiensis Mabrouki, Glöer and Taybi, 2021, and the stygobiont Rifiya yakoubii Ghamizi, 2020 inhabits the phreatic waters of the southern border of the Rif region, upstream of Moulouya, Sebou and Loukkos basins.…”