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 Baltimore on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 421st most-seen of the 705 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.
June
In that month about 10% of wildlife watchers report a Hebrew Moth in Baltimore on a given day, against under 5% in July to May, 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 4 cities where we can rate Hebrew Moth sightings, Baltimore has the highest daily chance: under 5%. Next come Washington (United States, under 5%) and Boston (United States, under 5%).
Same family: Noctuidae
The closest relatives of the Hebrew Moth that you can see in Baltimore (family Noctuidae, Cutworm Moths and Allies) are Bristly Cutworm Moth (about 10%), Ipsilon Dart Moth (about 10%) and Yellow-Striped Armyworm Moth (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 Baltimore (9 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.
