Anavitrinella pampinaria
In 3 days ~10% in a week ~30%
Anavitrinella pampinaria, the common gray, is a moth of the family Geometridae. The species was first described by Achille Guenée in 1857. It is found in most of North America except the Arctic regions, south to Mexico. The wingspan is 23–34 mm.
Adults are on wing from April to October. The larvae feed on Malus, Fraxinus, Trifolium, Pyrus, Populus and Salix species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Philadelphia | 🇺🇸 United States | |
| 5 | Baltimore | 🇺🇸 United States | |
| 6 | Montreal | 🇨🇦 Canada | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | Boston | 🇺🇸 United States | |
| 9 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a North American Common Gray sighting in Shenandoah National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 447th most-seen of the 723 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.
July to September
In those months about 10% of wildlife watchers report a North American Common Gray in Shenandoah National Park on a given day, against under 5% in October to June, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most North American Common Gray 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.
Only Shenandoah National Park, in our data
Shenandoah National Park is the only park on Wallace's Line with enough records to rate North American Common Gray sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the North American Common Gray that you can see in Shenandoah National Park (family Geometridae, Geometer Moths) are Tulip-Tree Beauty (about 20%), Pale Beauty (about 10%) and Large Maple Spanworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the North American Common Gray is recorded against all the insects logged in Shenandoah 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.
