You can add to the list the colors of their wings, rendered by a complex nanostructure that is triply periodic [1]. [1]: https://math.ucr.edu/home/baez/butterf

You can add to the list the colors of their wings, rendered by a complex nanostructure that is triply periodic [1]. [1]: https://math.ucr.edu/home/baez/butterfly.html https://math.ucr.edu/home/baez/butterfly.html