Sphinx chersis
In 3 days ~20% in a week ~40%
Sphinx chersis, the great ash sphinx or northern ash sphinx, is a moth that belongs to the family Sphingidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zion National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Great Ash Sphinx sighting in Acadia National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 135th most-seen of the 405 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 to September
In those months about 10% of wildlife watchers report a Great Ash Sphinx in Acadia National Park on a given day, against under 5% in October to June, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Great Ash Sphinx sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Great Ash Sphinx sightings, Acadia National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Zion National Park (United States, about 10%).
Same genus: Sphinx
The closest relatives of the Great Ash Sphinx that you can see in Acadia National Park (genus Sphinx) are Laurel Sphinx (about 10%) and Northern Apple Sphinx (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Great Ash Sphinx is recorded against all the insects logged in Acadia National Park (18 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.
