Wavelength discrimination in the hummingbird hawkmoth Macroglossum stellatarum.
Despite the strong relationship between insect vision and the spectral properties of flowers, the visual system has been studied in detail only in few insect pollinator species. For instance, wavelength discrimination thresholds have been determined in two species only: the honeybee (Apis mellifera) and the butterfly Papilio xuthus. Here, we present the wavelength discrimination thresholds (Δλ) fo
