in London, and then in his 1863 book The Naturalist on the River Amazons. The term "Batesian mimicry" has since been used in his honour, its usage becoming restricted to the situation in which a harmless mimic gains protection from its predators by resembling a distasteful model. Among the observations in Bates's 1862 paper is the statement:

The German naturalist Fritz Müller also spent many years studying butterflies in the Amazon