Idalus aleteria
In 3 days ~30% in a week ~50%
Idalus aleteria is a moth of the family Erebidae. It was described by William Schaus in 1905. It is found in Costa Rica, French Guiana, Guyana, Peru, Bolivia and Trinidad. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 2 | Manu National Park | 🇵🇪 Peru |
With luck
About 10% of wildlife watchers report an Idalus aleteria sighting in Chirripó National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 92nd most-seen of the 127 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.
February
In that month about 30% of wildlife watchers report an Idalus aleteria in Chirripó National Park on a given day, against under 5% in March–June and August–January, the lowest months. That is one of Chirripó National Park's driest months, with about 75 mm of rain against 690 mm in October.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Idalus aleteria sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Idalus aleteria sightings, Chirripó National Park has the highest daily chance: about 10%. Next come Manu National Park (Peru, about 10%).
Same family: Erebidae
The closest relatives of the Idalus aleteria that you can see in Chirripó National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Cosmosoma joavana (about 10%), Eucereon tigrata (about 10%) and Amastus aconia (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Idalus aleteria is recorded against all the insects logged in Chirripó National Park (6 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.
