Parides ascanius
In 3 days ~20% in a week ~30%
Parides ascanius, the Fluminense swallowtail, is a species of butterfly in the family Papilionidae. It is endemic to Brazil where it is confined to the municipalities of Atafona (São João da Barra) and Itaguaí.It is found in subcoastal swamps and thickets ('restinga'). It is a said to be a primitive species, lacking vigour and facing competition from the sympatric Parides zacynthus and Parides anchises nephalion, the two most advanced members of the genus, both strong and aggressive species.
Most of its habitat is threatened and the localities in which it occurs are scattered. A strikingly beautiful butterfly it is on the Brazilian list of animals threatened with extinction, the first insect so designated. Parides ascanius has a spatulate tail. The two sexes are similar. The male has on the hindwing a hindmarginal fold, covered with white wool (androconial fold. A broad white median band traverses both wings which have black ground colour; on the hindwing this is more or less rose red.The hindwing has a deeply scalloped outer margin, a relatively long tail, and an extension of the median band of the forewing to the inner margin. This wing is washed with rose coloured... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tijuca National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Fluminense Swallowtail sighting in Tijuca National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 65th most-seen of the 132 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June, August and November–January
In those months about 10% of wildlife watchers report a Fluminense Swallowtail in Tijuca National Park on a given day, against under 5% in February–May, July and September–October, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Fluminense Swallowtail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Tijuca National Park, in our data
Tijuca National Park is the only park on Wallace's Line with enough records to rate Fluminense Swallowtail sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Fluminense Swallowtail is recorded against all the insects logged in Tijuca National Park (23 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.
