Brilliant camouflage. (a) Reflectance spectra measured with an integrating sphere of an elytron of the diamond weevil, Entimus imperialis, of a green oak leaf, and of the wing underside of the green hairstreak butterfly, Callophrys rubi. (b) Scatter pattern of a single-scale-carrying pit in a weevil elytron illuminated with wide-aperture white light. Black solid line, E. imperalis; green line, C.rubi; red line, green leaf. The red circles indicate scattering angles of 5°, 30°, 60° and 90° respectively.