Abstract/Overview Visual cues have been explored in the past for the management of pests of agronomic importance, including Spodoptera frugiperda (J.E. Smith) and Spodoptera exigua (Hübner). They are used to monitor, attract and kill, or to suppress the nocturnal behaviour of the insects. The current commercial universal traps, using reflected sunlight, are not effective for nocturnal insects like Spodoptera and current light traps may use a suboptimal or unattractive wavelength since th...