Figure 6 from: Zhang M, Ruan Y, Wan X, Tong Y, Yang X, Bai M (2019) Geometric morphometric analysis of the pronotum and elytron in stag beetles: insight into its diversity and evolution. ZooKeys 833: 21-40. https://doi.org/10.3897/zookeys.833.26164

Figure 6 Differences in pronotum shape among each branch and ancestor, on the basis of principal component analysis. Empty dots indicate the number of the node on the phylogenetic tree; solid dots indicate the average shape of the extant subfamily/tribe of each branch.