Froufe, E., D.V. Gonçalves, A. Teixeira, R. Sousa, S. Varandas et al. 2016. Who lives where? Molecular and morphometric analyses clarify which Unio species (Unionida, Mollusca) inhabit the southwestern Palearctic. Organisms Diversity & Evolution 16(3): 597-611. https://doi.org/10.1007/s13127-016-0262-x.
(click the figure number to see the cladogram)