Longwing (Heliconius) butterflies combine a restricted set of pigmentary and structural coloration mechanisms.
Bodo D WiltsAidan J M VeyAdriana D BriscoeDoekele G StavengaPublished in: BMC evolutionary biology (2017)
The pigmentary and structural traits are discussed in relation to their phylogenetic distribution and the evolution of vision in this highly interesting clade of butterflies.