Papilio demodocus
In 3 days ~50% in a week ~80%
Papilio demodocus, the citrus swallowtail or Christmas butterfly, is a swallowtail butterfly which commonly occurs over the entirety of sub-Saharan Africa, including Madagascar, besides the southern Arabian Peninsula. The caterpillars feed on various native plants of especially the family Rutaceae, but have also taken to the leaves of cultivated citrus trees.
Citrus swallowtails pass through approximately three generations per year. Female butterflies lay their eggs singly on citrus leaves. After about six days, the egg hatches into an immature larva. The immature larvae are black, yellow, and white with spikes. Their coloration provides effective camouflage, as they resemble bird droppings. They grow to a length of 10 or 15 mm before changing into mature larvae.
Mature larvae are green with white or pink markings and eyespots. They grow to a maximum length of about 45 mm. Mature caterpillars lack the camouflage of their immature state. Instead, when threatened by a bird or other predator, they produce a forked, orange-coloured organ known as an osmeterium. The organ emits a strong smell which acts as a discouragement... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ankarafantsika National Park | 🇲🇬 Madagascar | |
| 2 | Akagera National Park | 🇷🇼 Rwanda | |
| 3 | Lake Mburo National Park | 🇺🇬 Uganda | |
| 4 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 5 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 6 | Nairobi National Park | 🇰🇪 Kenya | |
| 7 | Arusha National Park | 🇹🇿 Tanzania | |
| 8 | Addo Elephant National Park | 🇿🇦 South Africa | |
| 9 | Table Mountain National Park | 🇿🇦 South Africa | |
| 10 | Tarangire National Park | 🇹🇿 Tanzania | |
| 11 | Pilanesberg National Park | 🇿🇦 South Africa | |
| 12 | Odzala-Kokoua National Park | 🇨🇬 Republic of the Congo | |
| 13 | Murchison Falls National Park | 🇺🇬 Uganda | |
| 14 | Hluhluwe-Imfolozi Park | 🇿🇦 South Africa | |
| 15 | Kruger National Park | 🇿🇦 South Africa | |
| 16 | West Coast National Park | 🇿🇦 South Africa | |
| 17 | Garden Route National Park | 🇿🇦 South Africa | |
| 18 | Masai Mara National Reserve | 🇰🇪 Kenya | |
| 19 | Chobe National Park | 🇧🇼 Botswana |
Possible
About 20% of wildlife watchers report a Citrus Swallowtail sighting in Arusha National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 7th most-seen of the 13 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
February
In that month about 40% of wildlife watchers report a Citrus Swallowtail in Arusha National Park on a given day, against under 5% in May to December, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Citrus Swallowtail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
7th of 19
Of the 19 parks where we can rate Citrus Swallowtail sightings, Arusha National Park ranks 7th at about 20%. The best odds are in Ankarafantsika National Park (Madagascar, about 40%), Akagera National Park (Rwanda, about 40%) and Lake Mburo National Park (Uganda, about 40%). All parks ranked.
Same genus: Papilio
The closest relatives of the Citrus Swallowtail that you can see in Arusha National Park (genus Papilio, Common Swallowtails) are Apple-Green Swallowtail (about 20%), Emperor Swallowtail (about 20%) and Mocker Swallowtail (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Citrus Swallowtail is recorded against all the insects logged in Arusha National Park (5 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.
