The gaudy colors on the sunset moth, native to Madagascar, also warn predators of its toxicity.

Butterflies and moths are both members of the order Lepidoptera, which means "scaled wing." Their wings are composed of microscopic scales that protect the insect from moisture, and also produce elegant color patterns. Some colors are the result of pigment in the scales, but iridescent hues are produced by microstructures in the scales that scatter light in various ways.