Theodoxus baeticus (Lamarck, 1822). A–D. Specimen from Cuquillo, Granada, Andalusia, Spain (UGSB 22089); E–H. Specimen (T. meridionalis-morphotype) collected in the Palancia River, Navajas, Spain (UGSB 22090); I–L. Specimen (T. elongatulus-morphotype) from Arrancada, Pombal, Portugal (UGSB 22080); M–P. Specimen (T. velascoi-morphotype) from Montanejos, Castellón, Spain (UGSB 22082). Theodoxus cf. valentinus (Graells, 1846). Q–S. Specimen conforming to T. valentinus from the Verd River, Masalavés, Spain (UGSB 21787); T. Operculum of a specimen conforming to T. valentinus from the same locality as Q–S (UGSB 22087). All specimens, except Q–S, were used in the phylogeny (Fig. 2). Scale bars: 1 mm.