Fig. 4 in Strong phylogenetic constraint on transition metal incorporation in the mandibles of the hyper-diverse Hymenoptera (Insecta)

Fig. 4 Phylogenetic tree mapping the larval development site (LDS) (0 = unconcealed, 1 = concealed) for each taxon analyzed in this study. The circle with a picture of a species developing in a concealed site (the apoid wasp Stizus continuus (Crabronidae), emerging from its nest) marks the ancestral state for Apocrita, while the circle with a question mark indicate the unclear ancestral state for Hymenoptera. The histogram in the lower part of the figure show the distribution of cases for a given rank of Zn, for species with either LDS type