Heliconius wallacei
In 3 days ~30% in a week ~50%
Heliconius wallacei, the Wallace's longwing, is a butterfly of the family Nymphalidae. It was described by Tryon Reakirt in 1866. It is found from Venezuela and Trinidad to southern Brazil and Peru. The habitat consists of lowland rainforests.
The wingspan is 70–75 mm. The larvae are gregarious and mostly feed on Passiflora species from the subgenus Distephana. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manu National Park | 🇵🇪 Peru | |
| 2 | Yasuní National Park | 🇪🇨 Ecuador |
With luck
About 10% of wildlife watchers report a Wallace's Longwing sighting in Yasuní National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 106th most-seen of the 203 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Wallace's Longwing in Yasuní National Park on a given day, against under 5% in March–April, June, August and October–January, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Wallace's Longwing sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Wallace's Longwing sightings, Yasuní National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Manu National Park (Peru, about 10%).
Same genus: Heliconius
The closest relatives of the Wallace's Longwing that you can see in Yasuní National Park (genus Heliconius, Longwings and Heliconians) are Doris Longwing (about 10%), Numata Longwing (about 10%) and Red Postman (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Wallace's Longwing is recorded against all the insects logged in Yasuní National Park (8 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.
