Papilio thoas
In 3 days ~60% in a week ~90%
Papilio thoas, the king swallowtail or Thoas swallowtail, is a butterfly of the family Papilionidae. It is found in the southernmost United States, Mexico, Central America and South America (as far south as Argentina and Uruguay). The species is easily confused with the giant swallowtail, which it closely resembles in both larval and adult stages. The caterpillars feed on the leaves of citrus plants (Rutaceae). They have also been reported as feeding on a member of the genus Piper.
A large species (12 to 14 cm (4.7 to 5.5 in) wingspan. The wings are narrow. The forewings are mostly brown. A yellow band runs from the tip, becoming narrower towards the back. There is also a row of yellow arcuate spots on the underside of the wing edge. The hind wings are predominantly brown, toothed and have a long caudal process. This carries a yellow core. There is a row of yellow arcuate spots at the edge of the hind wings. A broad yellow band runs through the first half of the wing. Inside sits a black eyespot with blue-white dusting. The yellow regions are more pronounced on the undersides of the wings. Blue-white arcuate spots adjoin the yellow arcuate spots on the upper side... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Luís | 🇧🇷 Brazil | |
| 2 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 3 | Salvador | 🇧🇷 Brazil | |
| 4 | João Pessoa | 🇧🇷 Brazil | |
| 5 | Fortaleza | 🇧🇷 Brazil | |
| 6 | Mendoza | 🇦🇷 Argentina | |
| 7 | Recife | 🇧🇷 Brazil | |
| 8 | Valencia | 🇻🇪 Venezuela | |
| 9 | Manaus | 🇧🇷 Brazil | |
| 10 | Natal | 🇧🇷 Brazil |
Possible
About 30% of wildlife watchers report a Thoas Swallowtail sighting in Fortaleza on a given day, based on 41 verified sightings from GBIF citizen-science data. It is the 2nd most-seen of the 112 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
February and April
In those months about 40% of wildlife watchers report a Thoas Swallowtail in Fortaleza on a given day, against about 10% in August, the lowest month. Those are among Fortaleza's wettest months, with about 200 mm of rain a month against almost none in September.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Thoas 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.
5th of 33
Of the 33 cities where we can rate Thoas Swallowtail sightings, Fortaleza ranks 5th at about 30%. The best odds are in São Luís (Brazil, about 50%), Santa Cruz de la Sierra (Bolivia, about 40%) and Salvador (Brazil, about 30%).
GBIF citizen-science records
It is estimated from how often the Thoas Swallowtail is recorded against all the insects logged in Fortaleza (41 verified sightings), 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.
