Aglais io

European peacock
On blackthorn at Otmoor, Oxfordshire, England
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Aglais
Species:	A. io
Binomial name
Aglais io (Linnaeus, 1758)[1]
Subspecies
A. io caucasica (Jachontov, 1912) A. io geisha (Stichel, 1908)
Synonyms[2]
List Inachis io (Linnaeus, 1758) Inachis nigrolimbata Verity, 1950 Inachis oligoio Reuss, 1939 Nymphalis antigone Fischer de Waldheim Nymphalis belisaria Oberthür, 1889 Nymphalis fischeri Standfuss Nymphalis griseocellata Lempke, 1956 Nymphalis io (Linnaeus, 1758) Nymphalis ioides Ochsenheimer, 1807 Nymphalis sardoa Staudinger, 1871 Papilio io Linnaeus, 1758[1] Papilio ioides Ochsenheimer, 1807 Vanessa astrida Derenne-Meyers, 1926 Vanessa basi-obscura Reuss, 1911 Vanessa bimaculata Tempel, 1924 Vanessa calorefacta Urich, 1897 Vanessa cyanosticta Raynor, 1903 Vanessa dyophthalmica Garbini, 1883 Vanessa exmaculata Reuss, 1911 Vanessa exoculata Weymer, 1878 Vanessa extrema Fischer de Waldheim, 1898 Vanessa fulva Oudemans, 1905 Vanessa hackrayi Cabeau, 1925 Vanessa io (Linnaeus, 1758) Vanessa io subsp. ioides (Ochsenheimer, 1807) Vanessa irenea Prüffer, 1921 Vanessa jo (Linnaeus, 1758) Vanessa jocaste Urich, 1897 Vanessa lacteus Bandermann, 1935 Vanessa lucidocellata Reuss, 1911 Vanessa magnimaculata Reuss, 1911 Vanessa marginalis Reuss, 1911 Vanessa marginimaculata-obscura Reuss, 1911 Vanessa meilhani Frémont, 1926 Vanessa mesoides Reuss, 1910 Vanessa mesoides-brunnea Reuss, 1911 Vanessa mesoides-clara Reuss, 1911 Vanessa mesoides-lucidocellata Reuss, 1911 Vanessa mesoides-parvimaculata Reuss, 1911 Vanessa mesoides-sibirica Reuss, 1922 Vanessa mesoides-splendens Reuss, 1911 Vanessa mesoides-viridiocellata Reuss, 1911 Vanessa narses Schultz, 1899 Vanessa nigrifasciata Reuss, 1911 Vanessa nigriocellata Reuss, 1911 Vanessa nigromaculata Kleinschmidt, 1929 Vanessa pallens Knoch, 1927 Vanessa pallida Tutt, 1896 Vanessa parvimaculata Reuss, 1911 Vanessa pavo Stichel, 1902 Vanessa prochnovi Pronin, 1928 Vanessa silaceus Bandermann, 1935 Vanessa teloides-brunnea Reuss, 1911 Vanessa teloides-clara Reuss, 1911 Vanessa teloides-lucidocellata Reuss, 1911 Vanessa teloides-nigrifasciata Reuss, 1911 Vanessa teloides-splendens Reuss, 1911 Vanessa transparens Beuret, 1926

Aglais io, the European peacock,^[3][4][5] or the peacock butterfly, is a colourful butterfly, found in Europe and temperate Asia as far east as Japan. The peacock butterfly is resident in much of its range, often wintering in buildings or trees. It therefore often appears quite early in spring.

The peacock butterfly has figured in research in which the role of eyespots as an anti-predator mechanism has been investigated.^[6] The peacock is expanding its range^[3][7] and is not known to be threatened.^[7]