Fig. 4

Reflectance measurements (visible spectrum) from the dorsal side of the wing of Hermetia illucens recorded with hyperspectral camera. (a) Mean reflectance spectra in male and female wings. Note in the female wing the peak in wavelengths in the range between 400 and 430Â nm, corresponding to the blue colour. (b) Difference in the mean reflectance spectrum between male and female wings.