Eresia lansdorfi
In 3 days ~50% in a week ~80%
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 Iguaçu National Park on a given day, based on 60 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 31st 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.
April, June–July and September–November
In those months about 30% of wildlife watchers report a Lansdorf's Crescent in Iguaçu National Park on a given day, against about 10% in February–March and August, the lowest months.
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.
2nd of 4
Of the 4 parks where we can rate Lansdorf's Crescent sightings, Iguaçu National Park ranks 2nd at about 20%. The best odds are in Iguazú National Park (Argentina, about 30%).
Same family: Nymphalidae
The closest relatives of the Lansdorf's Crescent that you can see in Iguaçu National Park (family Nymphalidae, Brush-footed Butterflies) are Agathina Emperor (about 70%), Hydaspes Eighty-Eight (about 50%) and Orange Mapwing (about 40%), 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 Iguaçu National Park (60 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.
