On the presence of Abida occidentalis (Fagot, 1888) in the Iberian Peninsula (Gastropoda: Pulmonata: Chondrinidae). - A review of all records of Abida occidentalis in the Iberian Peninsula is made. Historical background is studied. The species was cited in the 1980s in several localities in Catalonia, Andorra and Navarre, and had not been mentioned again. It is confirmed that they were mostly
... [Show full abstract] confused with other similar species of the genus, and that only the citation of Navarre by Eikenboom (1990) can be considered valid. A redescription of the species and a dichotomous key to differentiate similar taxa are proposed.