Adhemarius ypsilon
In 3 days ~20% in a week ~40%
Adhemarius ypsilon is a species of moth in the family Sphingidae. It was described by Rothschild and Jordan in 1903 and is known from Costa Rica, Mexico, Belize, Guatemala, Nicaragua, Venezuela, French Guiana, Ecuador, Peru, and Bolivia.
The wingspan is 89–117 mm for males and 107–126 mm for females. In Costa Rica, moths in this species take flight year round. The larvae feed on several species in the plant genus Ocotea (including Ocotea veraguensis, Ocotea atirrensis, Ocotea sarah and Ocotea dendrodaphne). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cerro Azul Meámbar National Park | 🇭🇳 Honduras | |
| 2 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 3 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 4 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 5 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report an Adhemarius ypsilon sighting in Braulio Carrillo National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 256th most-seen of the 378 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.
July
In that month about 20% of wildlife watchers report an Adhemarius ypsilon in Braulio Carrillo National Park on a given day, against under 5% in April–May and August–January, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Adhemarius ypsilon sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 5 parks where we can rate Adhemarius ypsilon sightings, Braulio Carrillo National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Cerro Azul Meámbar National Park (Honduras, about 10%), Tapantí-Macizo de la Muerte National Park (Costa Rica, about 10%) and Monteverde Cloud Forest Reserve (Costa Rica, about 10%).
Same family: Sphingidae
The closest relatives of the Adhemarius ypsilon that you can see in Braulio Carrillo National Park (family Sphingidae, Sphinx Moths) are Xylophanes zurcheri (about 30%), Duponchel's Sphinx (about 20%) and Eumorpha phorbas (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Adhemarius ypsilon is recorded against all the insects logged in Braulio Carrillo 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.
