Papilio ulysses

CSIRO ScienceImage 3831 Ulysses Butterfly

Papilio ulysses ambiguus Rothschild, 1895

Ulysses Butterfly Caterpillar

Papilio ulysses, commonly known as the Ulysses butterfly or Blue Mountain Swallowtail, is a large swallowtail butterfly of the family Papilionidae. It is found in Australia, Papua New Guinea, the Solomon Islands, and Indonesia. The butterfly is known for its striking blue and black wings, which make it one of the most recognizable butterflies in its range.

Description[edit | edit source]

The Ulysses butterfly has a wingspan of about 14 cm (5.5 inches). The upper side of the wings is a vibrant electric blue, while the underside is a more muted brown with a few blue spots. The blue coloration is due to the microscopic structure of the scales on the wings, which reflect light in such a way that it appears blue.

Habitat[edit | edit source]

Papilio ulysses is typically found in tropical rainforest areas, but it can also be seen in suburban gardens where its host plants are cultivated. The butterfly prefers habitats that are warm and humid, with plenty of flowering plants for nectar.

Life Cycle[edit | edit source]

The life cycle of Papilio ulysses includes four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. The female lays her eggs on the leaves of host plants, which include species of the genus Euodia and Melicope. The caterpillars are green with white markings and go through several instars before pupating. The chrysalis is green and resembles a leaf, providing camouflage from predators.

Behavior[edit | edit source]

The Ulysses butterfly is known for its rapid and erratic flight. Males are highly territorial and are often seen patrolling their territory in search of females. The butterfly is also attracted to bright colors, which is why it is often seen in gardens with brightly colored flowers.

Conservation Status[edit | edit source]

While not currently listed as endangered, the Ulysses butterfly faces threats from habitat destruction and the use of pesticides. Conservation efforts focus on preserving its natural habitat and promoting the planting of host plants in gardens and parks.