Estimated ω values of HmB candidate genes across various Heliconiini lineages. Background ω values are indicated at the base of each unrooted tree, calculated using the one-ratio model in PAML. The multiple ratios model was used to estimate lineage specific ω values for H. melpomene, H. numata, and H. erato, the three highly polymorphic species, of three genes in the HmB region: MAD (A), kinesin (B), and HM01022 (C). Other details regarding analyses and trees are as stated for Fig. 4.