- Colour: predominantly pale tawny-orange with a heavy black border that encloses large white spots in the forewing. The inner leading edge of the forewing is deep red-brown. The underside is similar to the upper side but paler with narrower black margins. Males have a distinct patch of dark grey sex-scales on the upper side of the hind wing.
- Size: its wingspan is about 7 - 8 cm.
- Larval food plants: these include native milkweeds (Cynanchum species and Marsdenia species) as well as introduced milkweeds such as swan plant (Gomphocarpus fruiticose) and red cotton bush (G. curassavica).
- Movement: it usually flies slowly from 1 to 2 m above the ground.
- Breeding: the caterpillars have 3 pairs of tentacles and yellow, white and black rings.
What to Observe
- Presence (to establish the first and last sighting for the season)
- Egg laying
- Chrysalis (butterfly emerging from its shell)
ClimateWatch Science Advisor
We expect butterflies to appear earlier in the year as a result of climate change warming the Earth. They may also start appearing in new areas as warmer temperatures enable them to live in environments that were previously too cold for them.
When To Look
- Spring and summer, in semi-arid parts of Australia.
- It may be seen at other times of the year after heavy rain.
Where To Look
- Primarily in the tropics and arid interior. Sometimes it expands its range to the temperate south coast.
- Periods of larger than normal rainfall in the Pilbara have lead to abundant populations being sighted in the mid-west of Australia.
- The adult butterflies are well known migrants and may be encountered anywhere. They readily visit flowering shrubs in suburban gardens.
The map below displays the accumulated observations of these species as reported by ClimateWatch observers, together with the layer showing how the range of the species might change between now and 2085, with orange areas indicating where the species might disappear, and green areas where the species range might expand.
Williams A, Powell R, Williams M, Walker G 2009. Common Butterflies of the South-West. DEC Kensington. Department of Environment and Conservation, Western Australia, Bush Books.
They look similar to the Wanderer Butterfly (Danaus plexippus plexippus), with orange coloured wings and dark edges, but they also have a larger white pattern on their forewings.