Thoas Swallowtail
Daily sighting probability ~10% · With luck
at Medellín

In 3 days ~30% in a week ~50%

39 Verified sightings at Medellín
738 In all 28 parks From 2019 to 2026
June Best month
☀️ Diurnal When it's spotted

About the Thoas Swallowtail

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 →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Brownsberg Nature Park 🇸🇷 Suriname
~50%
2 Iguazú National Park 🇦🇷 Argentina
~40%
3 Iguaçu National Park 🇧🇷 Brazil
~30%
4 Bastimentos Island National Marine Park 🇵🇦 Panama
~30%
5 Soberanía National Park 🇵🇦 Panama
~20%
6 Pico Bonito National Park 🇭🇳 Honduras
~20%
7 Tortuguero National Park 🇨🇷 Costa Rica
~20%
8 Lago de Yojoa 🇭🇳 Honduras
~20%
9 Tambopata National Reserve 🇵🇪 Peru
~20%
10 Piedras Blancas National Park 🇨🇷 Costa Rica
~20%
11 Manuel Antonio National Park 🇨🇷 Costa Rica
~20%
12 Manu National Park 🇵🇪 Peru
~20%
13 Ostional Wildlife Refuge 🇨🇷 Costa Rica
~20%
14 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
~10%
15 Cerro Azul Meámbar National Park 🇭🇳 Honduras
~10%
16 Tenorio Volcano National Park 🇨🇷 Costa Rica
~10%
17 Braulio Carrillo National Park 🇨🇷 Costa Rica
~10%
18 La Amistad International Park (Panama) 🇵🇦 Panama
~10%
19 Parque Natural Metropolitano 🇵🇦 Panama
~10%
20 Corcovado National Park 🇨🇷 Costa Rica
~10%
21 Carara National Park 🇨🇷 Costa Rica
~10%
22 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
~10%
23 Chirripó National Park 🇨🇷 Costa Rica
~10%
24 Yasuní National Park 🇪🇨 Ecuador
~10%
25 Cahuita National Park 🇨🇷 Costa Rica
~10%
26 Tijuca National Park 🇧🇷 Brazil
~10%
27 Arenal Volcano National Park 🇨🇷 Costa Rica
~10%
28 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
~10%

Cities Where Found

# City Country Daily sighting probability
1 São Luís 🇧🇷 Brazil
~50%
2 Santa Cruz de la Sierra 🇧🇴 Bolivia
~40%
3 Salvador 🇧🇷 Brazil
~30%
4 João Pessoa 🇧🇷 Brazil
~30%
5 Fortaleza 🇧🇷 Brazil
~30%
6 Mendoza 🇦🇷 Argentina
~30%
7 Recife 🇧🇷 Brazil
~20%
8 Valencia 🇻🇪 Venezuela
~20%
9 Manaus 🇧🇷 Brazil
~20%
10 Natal 🇧🇷 Brazil
~20%

Before you go

What are the chances of seeing a Thoas Swallowtail in Medellín?

With luck

About 10% of wildlife watchers report a Thoas Swallowtail sighting in Medellín on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 26th most-seen of the 175 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.

When is the best time to see a Thoas Swallowtail in Medellín?

June

In that month about 20% of wildlife watchers report a Thoas Swallowtail in Medellín on a given day, against under 5% in February, the lowest month.

What time of day is best to see a Thoas Swallowtail?

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.

Is Medellín the best place to see a Thoas Swallowtail?

29th of 33

Of the 33 cities where we can rate Thoas Swallowtail sightings, Medellín ranks 29th at about 10%. The best odds are in São Luís (Brazil, about 50%), Santa Cruz de la Sierra (Bolivia, about 40%) and Salvador (Brazil, about 30%).

Which relatives of the Thoas Swallowtail live in Medellín?

Same genus: Papilio

The closest relatives of the Thoas Swallowtail that you can see in Medellín (genus Papilio, Common Swallowtails) are Ruby-Spotted Swallowtail (about 10%) and Black Swallowtail (about 10%), with each one's daily chance of a sighting.

Where does the Thoas Swallowtail sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Thoas Swallowtail is recorded against all the insects logged in Medellín (39 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.

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