Pyrisitia leuce
In 3 days ~30% in a week ~60%
Eurema leuce, the Hall's sulphur, is a butterfly in the family Pieridae. It is found on the West Indies and in Brazil, Uruguay, Colombia, and Venezuela. The length of the forewings is 17–21 mm for males and females. Adults have been recorded feeding on Bidens pilosa, Tournefortia hirsutissima, and Croton barahonensis. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Leuce Yellow sighting in Iguazú National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 98th most-seen of the 306 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
June and July
In those months about 30% of wildlife watchers report a Leuce Yellow in Iguazú National Park on a given day, against under 5% in March–April and October–January, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Leuce Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Leuce Yellow sightings, Iguazú National Park has the highest daily chance: about 10%. Next come Iguaçu National Park (Brazil, about 10%).
Same family: Pieridae
The closest relatives of the Leuce Yellow that you can see in Iguazú National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Dark Apricot Sulphur (about 30%), Tailed Sulphur (about 20%) and Statira Sulphur (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Leuce Yellow is recorded against all the insects logged in Iguazú National Park (24 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.
