Appendix: Wing photomicrographs and averaged yellow reflectance spectra

Photomicrographs of butterfly wings and averaged yellow reflectance spectra. Color-coded circles indicate the location from which the associated reflectance spectra were sampled. N=number of individual specimens measured. Left column: Dorsal wings and dorsal reflectance spectra, Right column: Ventral wings and ventral reflectance spectra. FD, forewing dorsal; FV, forewing ventral; HD, hindwing dorsal; HV, hindwing ventral.