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 |
Rare
Under 5% of wildlife watchers report a North American Common Gray sighting in Chicago on a given day, based on 75 verified sightings from GBIF citizen-science data. It is the 215th most-seen of the 978 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.
August
In that month about 10% of wildlife watchers report a North American Common Gray in Chicago on a given day, against under 5% in September to July, 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.
Yes
Of the 9 cities where we can rate North American Common Gray sightings, Chicago has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Toronto (Canada, under 5%).
Same family: Geometridae
The closest relatives of the North American Common Gray that you can see in Chicago (family Geometridae, Geometer Moths) are Chickweed Geometer Moth (about 10%), Common Tan Wave (about 10%) and Lesser 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 Chicago (75 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.
