:)
https://www.nybooks.com/articles/2020/04/23/charles-darwin-brilliant-plodder/

"Those and the other [Darwin's] plant books all retold the story: excess population, competition for resources, and random variation, with its attendant differential success in reproduction, constitute natural selection, yielding elaborate adaptations. Darwin’s famous prediction about the Madagascan orchid Angraecum sesquipedale, with its tubular nectar receptacle eleven inches deep, shows the interconnection most dramatically. He correctly deduced that a moth with an eleven-inch nectar-sucking proboscis must exist to pollinate it, because the plant’s manifest adaptations demand that. Forty years after Darwin’s orchid book appeared, the moth was found."