The European Peacock (Inachis io), more commonly known simply as the Peacock butterfly, is a colourful butterfly, found in Europe, temperate Asia as far east as Japan. It is the only member of the genus Inachis (the name is derived from Greek mythology, meaning Io, [the daughter] of Inachus). The Peacock butterfly is resident in much of its range, often wintering in buildings or trees. It therefore often appears quite early in spring.