Datana integerrima
In 3 days ~30% in a week ~50%
Datana integerrima, the walnut caterpillar moth, is a moth of the family Notodontidae. It is found in eastern North America, from Ontario, through most of the Eastern States west to Minnesota and south to northern Mexico.
The wingspan is 35–50 mm. Adults are on wing from May to August. The larvae feed on Carya, Juglans, Salix and Quercus species, Gleditsia triacanthos and some shrubs. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Point Pelee National Park | 🇨🇦 Canada | |
| 2 | Congaree National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Dallas | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Houston | 🇺🇸 United States | |
| 7 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Walnut Caterpillar Moth sighting in Congaree National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 99th most-seen of the 145 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Walnut Caterpillar Moth in Congaree National Park on a given day, against under 5% in October to July, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Walnut Caterpillar Moth 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 Walnut Caterpillar Moth sightings, Congaree National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Point Pelee National Park (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Walnut Caterpillar Moth is recorded against all the insects logged in Congaree 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.
