What are the chances of seeing an Idalus herois in Iguazú National Park?
With luck
About 10% of wildlife watchers report an Idalus herois sighting in Iguazú National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 269th most-seen of the 306 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.
When is the best time to see an Idalus herois in Iguazú National Park?
June
In that month about 20% of wildlife watchers report an Idalus herois in Iguazú National Park on a given day, against under 5% in August–October and December–May, the lowest months.
What time of day is best to see an Idalus herois?
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Idalus herois sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Is Iguazú National Park the best place to see an Idalus herois?
Yes
Of the 2 parks where we can rate Idalus herois sightings, Iguazú National Park has the highest daily chance: about 10%. Next come Iguaçu National Park (Brazil, about 10%).
Which relatives of the Idalus herois live in Iguazú National Park?
Same family: Erebidae
The closest relatives of the Idalus herois that you can see in Iguazú National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Black Witch (about 20%), Argyroeides braco (about 20%) and Carales astur (about 10%), with each one's daily chance of a sighting.
Where does the Idalus herois sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Idalus herois is recorded against all the insects logged in Iguazú National Park (5 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.