Graphium macleayanus is a butterfly species endemic to Australia, (it is one of the most widely distributed Swallowtail butterflies in Australia,) and it is the only Swallowtail found in Tasmania.
   Their preferred habitat is forests and groves, urban and suburban areas, agricultural and cultivated areas, mangroves and coastal wetlands.
   They are in their flight period from August to March, and they never stop flying for long. (Their wings are constantly vibrating.)
   Males defend their territory from rival males and can be seen circling treetops, descending to restlessly sip nectar from flowers.
   The dorsal side of their wing is green with white markings and black edges.

 The ventral surface is a deeper green with black, brown and white markings.

   Adults show a geographical and seasonal color variation

   Their hind wings have very pronounced tails.

   They are primarily attracted to the bright colors and unique shapes of flowers.

   While on the flowers drinking nectar, they pick up pollen, inadvertently transferring it between flowers, thus not only getting nectar for themselves, but also dropping pollen on other plants that they visit, facilitating the reproductive cycle of other plants.

   They are not poisonous species, but they have special glands that secrete foul odors and chemicals.

   Potential predators include birds, spiders, praying mantises, dragonflies and small mammals.