Eufidonia notataria
In 3 days ~10% in a week ~30%
Eufidonia notataria, the powder moth, is a species of moth in the family Geometridae. It is found in north-eastern North America. The wingspan is 22–27 mm. Adults are on wing from May to July. There is one generation per year.
The larvae feed on balsam fir, eastern hemlock, eastern larch and spruces. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Powder Moth sighting in Great Smoky Mountains National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 441st most-seen of the 822 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Powder Moth in Great Smoky Mountains National Park on a given day, against under 5% in June to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Powder Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Smoky Mountains National Park, in our data
Great Smoky Mountains National Park is the only park on Wallace's Line with enough records to rate Powder Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Powder Moth that you can see in Great Smoky Mountains National Park (family Geometridae, Geometer Moths) are Tulip-Tree Beauty (about 30%), White-Striped Black (about 20%) and Pale Beauty (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Powder Moth is recorded against all the insects logged in Great Smoky Mountains National Park (9 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.
