This butterfly is used as an emblem for Queensland tourism.
The Ulysses butterfly is endemic to a portion of northeastern Australia (eastern Queensland) and is also found in other places alike; New Guinea, the Moluccas, Bismarck Archipelago and northwestern Solomons (the similar relative P. montrouzieri is from New Caledonia).
The Ulysses butterfly typically has a wingspan of about 14 cm (5.5 in), but depending on subspecies has some variations in size. The upperside of the wings are an iridescent electric blue; the underside is a more subdued black and brown. The colours are produced by the microscopic structure of the scales.
The female of the species is different from the male in that she has little crescents of blue in the back, upside sections of her hind wings, where there is only black for males. When the butterfly is perched the intense blue of its wings is hidden by the plainer brown under side of its wings, helping it to blend in with its surroundings. When in flight, the butterfly can be seen hundreds of metres away as sudden bright blue flashes. Males are strongly attracted to the colour blue, including blue objects which are sometimes mistaken for females.
Diet and Conservation
The Ulysses butterfly inhabits tropical rainforest areas and suburban gardens. It is protected by the Australian government, although the species is not endangered. In the past, this butterfly had been threatened but planting Pink Flowered Doughwood has increased its numbers. Reduction in the number of the Euodia trees, a tree heavily used for laying eggs and for leaves eaten by caterpillars, may threaten the survival of this butterfly. Females favour small trees up to 2 metres tall to lay their eggs.
Foods for this butterfly include: kerosene wood, a variety of citrus plants, and Euodia. In Australia, the Ulysses butterfly's favorite food plant is the Pink Flowered Doughwood, a tree with clusters of small pink flowers growing straight out of the branches.
- P. Vukusic, J. R. Sambles, C. R. Lawrence, R. J. Wootton (2001) Sculpted-multilayer optical effects in two species of Papilio butterfly. Applied Optics 40:1116-1125 
- Erich Bauer and Thomas Frankenbach, 1998 Schmetterlinge der Erde, Butterflies of the world Part I (1), Papilionidae Papilionidae I: Papilio, Subgenus Achillides, Bhutanitis, Teinopalpus. Edited by Erich Bauer and Thomas Frankenbach. Keltern : Goecke & Evers ; Canterbury : Hillside Books ISBN 9783931374624
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