Fig. 4.

Allelic variants in the color locus of B. melanopygus comimics and close relatives. No fixed SNP or indel are similarly differentiated by color in other species. At Bottom are species related to B. melanopygus (Right, “mela”) that vary in the red/black color of metasomal segments T2 and T3 (segments indicated with a gray box) and their phylogenetic positions (Fig. 1). Species names and the respective color of the specimens are abbreviated above each picture. A map of the character state of each ordered SNP or indel (starred) across an 18.5-kb window that includes the narrowed fixed block (Fig. 2) is shown above. SNPs that are derived are shaded dark gray and ancestral alleles are white. Medium gray shading indicates alternative SNPs and indels to those in B. melanopygus.