Polygrammate hebraeicum
In 3 days ~40% in a week ~70%
Polygrammate is a monotypic genus of moths in the family Noctuidae. Its only species, Polygrammate hebraeicum, the Hebrew moth or Hebrew, is found in the eastern parts of North America, from Ontario, south to Florida and as far west as Texas. Both the genus and the species were first described by Jacob Hübner in 1818.
The wingspan is 23–39 mm. Adults are on wing from May to August. The larvae feed on black gum trees. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Hebrew Moth sighting in Great Smoky Mountains National Park on a given day, based on 94 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 64th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
June to August
In those months about 20% of wildlife watchers report a Hebrew Moth in Great Smoky Mountains National Park on a given day, against under 5% in October to March, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Hebrew Moth 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.
Yes
Of the 2 parks where we can rate Hebrew Moth sightings, Great Smoky Mountains National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, about 10%).
Same family: Noctuidae
The closest relatives of the Hebrew Moth that you can see in Great Smoky Mountains National Park (family Noctuidae, Cutworm Moths and Allies) are Beautiful Wood-Nymph (about 20%), American Dagger (about 10%) and Brown-Hooded Owlet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hebrew Moth is recorded against all the insects logged in Great Smoky Mountains National Park (94 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.
