Eresia lansdorfi
In 3 days ~40% in a week ~70%
Eresia lansdorfi, the false erato or Lansdorf's crescent, is a butterfly of the family Nymphalidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil | |
| 3 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 4 | Itatiaia National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Paulo | 🇧🇷 Brazil | |
| 2 | Curitiba | 🇧🇷 Brazil | |
| 3 | Porto Alegre | 🇧🇷 Brazil | |
| 4 | Belo Horizonte | 🇧🇷 Brazil | |
| 5 | Campinas | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Lansdorf's Crescent sighting in Itatiaia National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 24th most-seen of the 60 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
June
In that month about 40% of wildlife watchers report a Lansdorf's Crescent in Itatiaia National Park on a given day, against under 5% in February–March, May and September–November, the lowest months. That is one of Itatiaia National Park's driest months, with about 45 mm of rain against 330 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Lansdorf's Crescent sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 parks where we can rate Lansdorf's Crescent sightings, Itatiaia National Park ranks 4th at about 20%. The best odds are in Iguazú National Park (Argentina, about 30%), Iguaçu National Park (Brazil, about 20%) and Serra dos Órgãos National Park (Brazil, about 20%).
Same family: Nymphalidae
The closest relatives of the Lansdorf's Crescent that you can see in Itatiaia National Park (family Nymphalidae, Brush-footed Butterflies) are Waiter Daggerwing (about 20%), Pierella nereis (about 20%) and Brazilian Lady (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lansdorf's Crescent is recorded against all the insects logged in Itatiaia National Park (7 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.
