Finkbeiner, Susan D.; Fishman, Dmitry A.; Osorio, Daniel; Briscoe, Adriana D.
(2017)
Toxic Heliconius butterflies have yellow hindwing bars that - unlike their closest relatives - reflect ultraviolet (UV) and long wavelength light, and also fluoresce. The pigment in the yellow scales is 3-hydroxy-DL-kynurenine ...