How has floral specialization influenced bee evolution?
How and why animals specialize on resources are fundamental questions in biology. In the case of bees, the answers to these questions have important consequences cascading throughout ecosystems and crops alike via the invaluable pollination services they provide. Studies have investigated patterns of floral specialization in small groups of bees previously, but many questions remain. Primary among these are whether specialization or generalization are ancestral, and whether specialization might be associated with accelerated diversification rates. Here, we leverage the largest bee phylogeny to date to explore the diversification dynamics of bee-flower relationships.