Ortilia ithra
In 3 days ~70% in a week ~90%
Ortilia ithra, or the Ithra crescent, is a species of butterfly in the family Nymphalidae. It is native to broadleaf forests in South America from Brazil to Argentina. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | El Palmar National Park | 🇦🇷 Argentina | |
| 3 | Iguaçu National Park | 🇧🇷 Brazil | |
| 4 | Iberá National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rosario | 🇦🇷 Argentina | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | Montevideo | 🇺🇾 Uruguay | |
| 4 | Belo Horizonte | 🇧🇷 Brazil | |
| 5 | Curitiba | 🇧🇷 Brazil | |
| 6 | Cordoba | 🇦🇷 Argentina | |
| 7 | Porto Alegre | 🇧🇷 Brazil | |
| 8 | São Paulo | 🇧🇷 Brazil | |
| 9 | Rio de Janeiro | 🇧🇷 Brazil |
Possible
About 30% of wildlife watchers report an Ithra Crescent sighting in Rosario on a given day, based on 40 verified sightings from GBIF citizen-science data. It is the 3rd most-seen of the 82 insects we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
December
In that month about 60% of wildlife watchers report an Ithra Crescent in Rosario on a given day, against under 5% in February, May and July–August, the lowest months. That is one of Rosario's wettest months, with about 140 mm of rain against 20 mm in June.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Ithra Crescent 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 9 cities where we can rate Ithra Crescent sightings, Rosario has the highest daily chance: about 30%. Next come Buenos Aires (Argentina, about 30%) and Montevideo (Uruguay, about 20%).
Same family: Nymphalidae
The closest relatives of the Ithra Crescent that you can see in Rosario (family Nymphalidae, Brush-footed Butterflies) are Gulf Fritillary (about 50%), Southern Monarch (about 40%) and Junonia lavinia (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ithra Crescent is recorded against all the insects logged in Rosario (40 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.
