Cissia eous
In 3 days ~30% in a week ~60%
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 Porto Alegre on a given day, based on 30 verified sightings from GBIF citizen-science data. It is the 44th most-seen of the 226 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.
March
In that month about 30% of wildlife watchers report a Cissia eous in Porto Alegre on a given day, against under 5% in July to September, 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, Porto Alegre ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in São Paulo (Brazil, about 10%) and Campinas (Brazil, about 10%).
Same family: Nymphalidae
The closest relatives of the Cissia eous that you can see in Porto Alegre (family Nymphalidae, Brush-footed Butterflies) are Themisto Amberwing (about 40%), Julia Heliconian (about 30%) and Ruddy Daggerwing (about 30%), 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 Porto Alegre (30 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.
