Figure 4From: Pigmentary and photonic coloration mechanisms reveal taxonomic relationships of the Cattlehearts (Lepidoptera: Papilionidae: Parides)Scatterograms and reflectance spectra of a green cover scale of P. aeneas illuminated with a narrow-aperture, white-light beam. A Scatterogram of the upper side of the scale showing a diffraction pattern upon a diffuse background. B Scatterogram of the underside of the scale showing a strongly directional blue reflection. C Reflectance spectra of the upper (green curve) and under (olive curve) side of the scale.Back to article page