Iridopsis ephyraria
In 3 days ~10% in a week ~20%
Iridopsis ephyraria, commonly known as the pale-winged gray, is a species of moth in the family Geometridae. The species was first described by Francis Walker in 1860. It is found in the United States and southern Canada east of the Rocky Mountains, from New Brunswick to Florida, west to Texas and north to Alberta.
The wingspan is 23–28 mm. Adults are on wing from June to September. The larvae feed on a wide range of woody plants Fraxinus, Abies balsamea, Betula, Prunus virginiana, Tsuga canadensis, Ulmus, Ribes uva-crispa, Acer and Salix species.
Pimpla pedalis is a parasitoid of I. ephyraria pupae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Pale-Winged Gray sighting in Toronto on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 1005th most-seen of the 1689 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Pale-Winged Gray in Toronto on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Pale-Winged Gray sightings, Toronto ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%).
Same family: Geometridae
The closest relatives of the Pale-Winged Gray that you can see in Toronto (family Geometridae, Geometer Moths) are Chickweed Geometer Moth (about 10%), Pale Beauty (about 10%) and Single-Dotted Wave (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pale-Winged Gray is recorded against all the insects logged in Toronto (12 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.
