Xanthopan

Wallace's sphinx moth, Xanthopan praedicta, and Darwin's orchid Hawk-moths hover at night and drink through a long coiled proboscis, and this Madagascan species is the most famous of them. Darwin looked at the star orchid Angraecum sesquipedale, whose nectar sits at the bottom of a spur 12 to 18 inches long, and reasoned that some moth must have a tongue long enough to reach it. That moth was not formally described until 1903, and its name, praedicta, honors the prediction. As the moth works its tongue down the spur, pollen rubs off onto its head and travels to the next flower. Without a tongue that long, the orchid's nectar goes undrunk and its flowers unpollinated: the textbook case of a flower and an animal shaping each other.