Pachylia darceta
In 3 days ~30% in a week ~60%
Pachylia darceta is a moth of the family Sphingidae first described by Herbert Druce in 1881. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru | |
| 2 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 3 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 4 | Manu National Park | 🇵🇪 Peru | |
| 5 | Yasuní National Park | 🇪🇨 Ecuador | |
| 6 | Braulio Carrillo National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Darceta Sphinx sighting in Arenal Volcano National Park on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 41st most-seen of the 302 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.
July
In that month about 30% of wildlife watchers report a Darceta Sphinx in Arenal Volcano National Park on a given day, against under 5% in January and August–October, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Darceta Sphinx sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
3rd of 6
Of the 6 parks where we can rate Darceta Sphinx sightings, Arenal Volcano National Park ranks 3rd at about 10%. The best odds are in Tambopata National Reserve (Peru, about 20%) and Tapantí-Macizo de la Muerte National Park (Costa Rica, about 10%).
Same family: Sphingidae
The closest relatives of the Darceta Sphinx that you can see in Arenal Volcano National Park (family Sphingidae, Sphinx Moths) are Xylophanes zurcheri (about 10%), Pink Hawkmoth (about 10%) and Xylophanes belti (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Darceta Sphinx is recorded against all the insects logged in Arenal Volcano National Park (27 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.
