Cissia eous
In 3 days ~20% in a week ~40%
Cissia eous, locally known as the brown butterfly (Brazilian Portuguese: borboleta marrom), is a butterfly in the family Nymphalidae described by Arthur Gardiner Butler in 1867. It is found in the countries of Brazil, Argentina, Uruguay and Paraguay. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 2 | Iguazú National Park | 🇦🇷 Argentina | |
| 3 | Iguaçu National Park | 🇧🇷 Brazil | |
| 4 | Tijuca National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Paulo | 🇧🇷 Brazil | |
| 2 | Campinas | 🇧🇷 Brazil | |
| 3 | Porto Alegre | 🇧🇷 Brazil | |
| 4 | Vitória | 🇧🇷 Brazil | |
| 5 | Belo Horizonte | 🇧🇷 Brazil | |
| 6 | Niterói | 🇧🇷 Brazil | |
| 7 | Rio de Janeiro | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Cissia eous sighting in Rio de Janeiro on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 37th most-seen of the 169 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May–September and November–January
In those months about 10% of wildlife watchers report a Cissia eous in Rio de Janeiro on a given day, against under 5% in February–April and October, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Cissia eous sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 7 cities where we can rate Cissia eous sightings, Rio de Janeiro ranks 7th at about 10%, level with the leaders once rounded. The best odds are in São Paulo (Brazil, about 10%), Campinas (Brazil, about 10%) and Porto Alegre (Brazil, about 10%).
Same family: Nymphalidae
The closest relatives of the Cissia eous that you can see in Rio de Janeiro (family Nymphalidae, Brush-footed Butterflies) are White Peacock (about 30%), Gulf Fritillary (about 10%) and Ruddy Daggerwing (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cissia eous is recorded against all the insects logged in Rio de Janeiro (19 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.
