Acknowledgements
We thank Cynthia Riginos, Iva Popovic and Sinan-Saleh Kassam for their
input in early discussions on this topic. All members of the Butterfly
Genetics group at the University of Cambridge provided useful feedback,
especially Joana Meier and Gabriela Montejo-Kovacevich. We also extend
our thanks to the photographers who shared their work free of charge to
produce Figure 1: Carol Eunmi Lee, Jessa Thurman, Chen Wu, and James
Dorey.