Figure 1

Ultrametric tree with branch lengths in millions of years for Leptinotarsa decemlineata relative to five other Coleoptera genomes. The L. decemlineata lineage is shown in orange. Branches are labeled with their length in years (top) and with the number of gene family expansions (blue) and contractions (purple) that occurred on that lineage. Rapid changes for both types are in parentheses.