The Pellucid Hawk Moth looks partly moth, partly cicada, and partly Glasswing Butterfly. According to the Australian Geographic, very few species of Lepidoptera, the insect order which includes all butterflies and moths, have scaleless, transparent wings.
Coloured wings can serve many functions, including communication, defence, thermoregulation, feeding, and waterproofing. So why the transparent wings? It’s thought these wings reflect about 50% less light than opaque ones, rendering the wings almost invisible in flight. It’s like an invisibility cloak which makes it a great defence against becoming prey.