Papilio anactus
In 3 days ~20% in a week ~30%
Papilio anactus, the dainty swallowtail, dingy swallowtail or small citrus butterfly is a medium-sized butterfly from the family Papilionidae, that is endemic to Australia. For protection against predators, this non-poisonous butterfly mimics the poisonous male Cressida cressida, another swallowtail butterfly that obtains its toxic properties through its host plant, the Dutchman's pipe.
Papilio anactus is endemic to Australia. It was originally only present in New South Wales, Victoria and Queensland, but due to the growing of citrus, a larval food plant of this species, in orchards, the species spread to South Australia in the late 1920s. Papilio anactus is not present on Kangaroo Island or elsewhere in Australia, as there are currently too few citrus trees. Sadly this butterfly is much less common than it once used to be.
It also occurs on New Caledonia. There, it may be an introduced species or a vagrant. The eggs are relatively large, pale yellow, and roughly spherical. The eggs change to an orange colour when the larvae are almost ready to emerge.
Females only lay eggs on the newly grown leaves of the host plant. They are laid at the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Dainty Swallowtail sighting in Blue Mountains National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 359th most-seen of the 789 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
January–April and October–November
In those months about 10% of wildlife watchers report a Dainty Swallowtail in Blue Mountains National Park on a given day, against under 5% in May–September and December, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Dainty Swallowtail sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Dainty Swallowtail sightings, Blue Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Hattah-Kulkyne National Park (Australia, about 10%).
Same genus: Papilio
The closest relatives of the Dainty Swallowtail that you can see in Blue Mountains National Park (genus Papilio, Common Swallowtails) are Orchard Swallowtail (about 20%) and Lime Swallowtail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dainty Swallowtail is recorded against all the insects logged in Blue Mountains National Park (11 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
