FIGURE 138 in The arctic and alpine bumblebees of the subgenus Alpinobombus revised from integrative assessment of species' gene coalescents and morphology (Hymenoptera, Apidae, Bombus)

FIGURE 138. Dated estimate of the phylogenetic tree for the species of the subgenus Alpinobombus (Table 5) from a *BEAST analysis of four genes (COI, 16S, PEPCK, opsin) using species from the integrative assessment and with B. ignitus as the outgroup (not shown). Values above the nodes are Bayesian posterior probabilities showing branch support for groups. Values below the nodes are estimated dates of divergence in Ma (millions of years before the present) calibrated from a molecular estimate for the date of crown divergence within the subgenus Alpinobombus (Hines 2008). Grey bars show the 95% confidence limits on the estimated dates of divergence.