What's the Biggest Butterfly?

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Queen Alexandra Birdwings are the largest butterflies. Males grow to 6.7 to 7.4 inches (17 to 19 cm).
(Image credit: Wtolenaars | Dreamstime)

The Queen Alexandra Birdwing (Ornithoptera alexandrae) is the largest living butterfly, with a wingspan that stretches almost a foot across. One the rarest butterflies in the world, it's found only in the rain forests of New Guinea.

The females, which have a chocolate brown body and wings, boast a wingspan of 11 to 12 inches (28 to 31 centimeters) The males are smaller they grow to only 6.7 to 7.4 inches (17 to 19 cm) but they're much more colorful: they sport a bright yellow abdomen topped with electric green and aquamarine wings.

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Remy Melina was a staff writer for Live Science from 2010 to 2012. She holds a bachelor’s degree in Communication from Hofstra University where she graduated with honors.