Adhemarius ypsilon
In 3 days ~20% in a week ~50%
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 Tapantí-Macizo de la Muerte National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 32nd most-seen of the 187 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
February
In that month about 20% of wildlife watchers report an Adhemarius ypsilon in Tapantí-Macizo de la Muerte National Park on a given day, against under 5% in April to January, the lowest months. That is one of Tapantí-Macizo de la Muerte National Park's driest months, with about 160 mm of rain against 570 mm in October.
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, Tapantí-Macizo de la Muerte National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Cerro Azul Meámbar National Park (Honduras, about 10%).
GBIF citizen-science records
It is estimated from how often the Adhemarius ypsilon is recorded against all the insects logged in Tapantí-Macizo de la Muerte National Park (17 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.
