Adhemarius ypsilon
In 3 days ~30% in a week ~60%
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 Cerro Azul Meámbar National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 53rd most-seen of the 80 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
March
In that month about 30% of wildlife watchers report an Adhemarius ypsilon in Cerro Azul Meámbar National Park on a given day, against under 5% in April–May and August–January, the lowest months. That is one of Cerro Azul Meámbar National Park's driest months, with about 80 mm of rain against 360 mm in September.
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.
Yes
Of the 5 parks where we can rate Adhemarius ypsilon sightings, Cerro Azul Meámbar National Park has the highest daily chance: about 10%. Next come 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 Cerro Azul Meámbar National Park (family Sphingidae, Sphinx Moths) are Xylophanes zurcheri (about 10%), Leafy Sphinx (about 10%) and Pluto Sphinx (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 Cerro Azul Meámbar 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.
