Analyses of highly complex chemical profiles reveals that the hybrid lineages Coenonympha darwiniana and C. cephalidarwiniana inherited their scents from the high altitude species C. gardetta, despite receiving 75% of their genomes from the lowland species C. arcania. Patterns of hybridization align closely with patterns of chemical similarity, and suggests that cuticular compounds may play a key role in reproductive isolation. Well done Paul Doniol-Valcroze (and coauthors) for making sense of this complexity!
