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The Cairns Birdwing (''Ornithoptera euphorion'') is a species of birdwing butterfly endemic to northeastern Australia, and is Australia's largest endemic butterfly species. Other common names include Cooktown Birdwing and Northern Birdwing.〔Braby (2004) p. 124〕 The name Cairns in its common name is a reference to the Australian city in the region where this butterfly is found. ==Description== The wingspan can be up to 150 mm in females, and 125 mm in males.〔 A closely allied species, the New Guinea or Priam's Birdwing (''Ornithoptera priamus'') reaches 19 cm and is the largest butterfly species found in Australia, but it is not endemic. ''O. euphorion'' is quite closely related to ''O. richmondia'', differing by its greater size and more extensive green markings in the male. Males have a predominantly black upper wing with emerald green flashes, however the female lacks the green coloring, having a plain black upper wing with white patches. The female is the larger of the two sexes. There was a spectacular and rare genetic mutation of this butterfly, where single aberrant female produced less than 40 aberrant progeny. The females were pale instead of dark, and the males were golden instead of green.〔(Golden Birdwing ), Insect Company.〕 File:OrnithopteraCassandraRippon.jpg|Illustration of male from Icones ornithopterorum. File:OrnithopteraCassandra2Rippon.jpg|Illustration of female from Icones ornithopterorum. Note the lack the green coloration 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ornithoptera euphorion」の詳細全文を読む スポンサード リンク
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