Evolutionary losses of facial stripes in New World pitvipers
Associations between the evolutionary loss or gain of colours and habitat can be informative about how environment drives colour evolution, and provide insight into their functions.
Kwiatkowski, M.A. and D.B. Burt. 2011. Evolutionary losses of facial stripes in New World pitvipers. Biological Journal of the Linnean Society, 2011, 104, 923–933.