Phoebis neocypris
In 3 days ~50% in a week ~80%
Phoebis neocypris, the tailed sulphur, is a butterfly in the family Pieridae. It is native to Mexico, Central America, and South America. There is a record for one stray in southern Texas. The larvae feed on fresh leaves of Cassia species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Porto Alegre | 🇧🇷 Brazil | |
| 2 | Montevideo | 🇺🇾 Uruguay | |
| 3 | São Paulo | 🇧🇷 Brazil | |
| 4 | Curitiba | 🇧🇷 Brazil | |
| 5 | Buenos Aires | 🇦🇷 Argentina |
Possible
About 20% of wildlife watchers report a Tailed Sulphur sighting in Iguaçu National Park on a given day, based on 63 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 36th most-seen of the 279 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.
September to November
In those months about 40% of wildlife watchers report a Tailed Sulphur in Iguaçu National Park on a given day, against under 5% in February–March and July, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tailed Sulphur sightings with a recorded time, and nearly all 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 Tailed Sulphur sightings, Iguaçu National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Iguazú National Park (Argentina, about 20%).
Same genus: Phoebis
The closest relatives of the Tailed Sulphur that you can see in Iguaçu National Park (genus Phoebis) are Dark Apricot Sulphur (about 20%) and Straight-Lined Sulphur (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tailed Sulphur is recorded against all the insects logged in Iguaçu National Park (63 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.
