Fig. 5 in Who lives where? Molecular and morphometric analyses clarify which Unio species (Unionida, Mollusca) inhabit the southwestern Palearctic

Fig. 5 Left, shell pictures of representative Unio delphinus specimens (a River Guadiana, b River Mondego) and corresponding synthetic outline for the average shell shape (c). Right, shell pictures of representative Unio foucauldianus specimens (d River Mda, e River Noun) and corresponding synthetic outline for the average shell shape (f)