Polygrammate hebraeicum
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Hebrew Moth sighting in Washington on a given day, based on 44 verified sightings from GBIF citizen-science data. It is the 506th most-seen of the 1807 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Hebrew Moth in Washington on a given day, against under 5% in August to June, 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.
Among the best
Of the 4 cities where we can rate Hebrew Moth sightings, Washington ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%).
Same family: Noctuidae
The closest relatives of the Hebrew Moth that you can see in Washington (family Noctuidae, Cutworm Moths and Allies) are American Dagger (about 10%), American Copper Underwing (about 10%) and Smeared Dagger (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 Washington (44 verified sightings), 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.
