ornithoptera alexandrae , the Queen Alexandra's birdwing , is the largest butterfly in the world, with females reaching wingspans slightly in excess of 25 cm (9.8 inches). It is restricted to the forests of the Oro Province in eastern Papua New Guinea . The species was named by Walter Rothschild in 1907, in honor of Alexandra of Denmark . The first European to discover the species was Albert Stewart Meek in 1906, a collector employed by Walter Rothschild to collect natural history specimens from New Guinea. There are two type of ornithoptera alexandrae, male and female. Female: Female Queen Alexandra's birdwings are larger than males with markedly rounder, broader wings. The female can reach, and slightly exceed, a wingspan of 25 cm (9.8 inches), a body length of 8 cm (3.2 inches) and a body mass of up to 12 grams (0.42 oz), all enormous measurements for a butterfly. The female has brown wings with white marking
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