ReadMe19 for Henze MJ, Lind O, Mappes J, Rojas B, Kelber A (2018) An aposematic colour-polymorphic moth seen through the eyes of conspecifics and predators - sensitivity and colour discrimination in a tiger moth. Functional Ecology. 2018-01-13 This readme file describes data file 19 accompanying the above publication. For further queries, please contact almut.kelber@biol.lu.se. The following file is included: 19_Data_used for models_Arctia_plantaginis.xlsx This files contains (columns B to D) the spectral sensitivity curves of Arctic plantains used for visual models (columns F to J) illumination spectra used for models, with source information (columns L, M) background spectra used for models (columns O to CX) reflectances of forewings and hindwing of male and female colour morphs as described in the file. These are the basis for reflectance curves presented in Figure 4. All curves are the basis for visual models presented in Figures 6 and 7.