Arthropod pests, pollinators, and natural enemies of pests have a great economic importance to human health and food supply worldwide. Arthropods use optical cues to find food and suitable oviposition sites, daily and seasonal activities, orientation and navigation. Most arthropods have compound eyes with receptors for UV light (peak sensitivity at 360 nm) and for green-yellow light (peak sensitivity at 520-540 nm). Many arthropods also have simple eyes (ocelli) that respond to changes in light intensity. Some arthropods can detect linearly polarized light and use it as an optical cue for...