Correlation between log-transformed PC 1 as obtained from the geometric morphometric shape analysis of the mandibles (cf. Fig. 13) and the log-transformed inlever/outlever ratio of the mandible (cf. Table S4). Each dot represents a different species, color-coded by subfamily or group. Species numbers are explained in Table 1. r = Pearson’s correlation coefficient. ** = p < 0.01. The negative correlation also holds true for an analysis using phylogenetic independent contrasts (r = -0.46**).