Summary tree based on the results of the BayesTraits analysis (Figs 2–4) of state shifts in morphological character. A threshold of 0.75 was used to define the character shifts between states. Characters with multiple state shifts (homoplasies) are shown with white boxes, reversals are indicated by * and unresolved shifts are indicated by an open circle. Numbers at the left of the branches represent the nodes in Suppl. material 3.