Cephalon shape variation among the phylogroups of A. torrentium revealed by canonical variate analysis. Scatter plott of the two first canonical variate axes (CV1 and CV2) with associated wireframe representation depicting shape changes among phylogroups along positive and negative extremes of the axes. The light blue wireframes represent average cephalon shape, while the dark blue wireframes represent most extreme shape changes. Different colour dots represent different phylogroups: green dots − Banovina (BAN), black dots − central and south-eastern Europe (CSE), blue dots − Gorski Kotar (GK), purple dots − Lika and Dalmatia (LD), orange dots − Žumberak, Plitvice and Bjelolasica (ŽPB).