Orchard swallowtail butterfly

Papilio aegeus

Overview:

Papilio aegeus, commonly known as the Orchard Swallowtail Butterfly, is a species of butterfly native to Australia. It is one of the largest butterflies in the Papilionidae family and is well-known for its striking appearance and graceful flight.

Detailed Appearance:

  • The Orchard Swallowtail Butterfly has a wingspan of about 10 to 14 centimeters (4 to 5.5 inches).
  • The upper side of its wings is predominantly black with vivid, iridescent blue or green markings.
  • The hindwings feature a distinctive "tail" extension, resembling a swallow's tail.

Life Cycle:

  • The life cycle of the Orchard Swallowtail Butterfly includes four stages: egg, larva (caterpillar), pupa (chrysalis), and adult.
  • Female butterflies lay eggs on host plants, which are often citrus trees (e.g., lemon, lime).
  • Caterpillars are green with white or yellow markings and have a swollen thorax.
  • Pupation occurs on or near the host plant.
  • Adults emerge from the chrysalis, and the cycle repeats.

Identification of Adults:

  • Large size with a distinctive black and iridescent blue or green coloration.
  • Swallowtail "tails" on the hindwings.
  • Elegant and slow flight.

Identification of Caterpillars:

  • Green body with white or yellow markings.
  • Swollen thorax.
  • Osmeterium, an orange, fork-like organ, can be extruded as a defense mechanism.

Habitat and Range:

  • Found in various habitats, including gardens, forests, and urban areas.
  • Native to Australia, including eastern and southern regions.

Ecological Role:

  • Adults play a role in pollination as they visit flowers for nectar.
  • Caterpillars feed on leaves of host plants, primarily citrus trees.

Conservation Status:

  • The Orchard Swallowtail Butterfly is not considered endangered, and its populations are generally stable.

Note:

  • While the Orchard Swallowtail Butterfly is not a pest species, its caterpillars may feed on citrus trees. However, their impact is generally limited, and these butterflies are valued for their beauty and role in pollination.