Ennomos magnaria
In 3 days ~30% in a week ~50%
Ennomos magnaria, the maple spanworm moth, notched wing moth, notched-wing geometer or notch-wing moth, is a moth of the family Geometridae. The species was first described by Achille Guenée in 1858. It is found from coast to coast in southern Canada and the northern United States, south in the east to Florida and Louisiana and in the west to California.
The wingspan is 43–60 mm. Adults resemble an autumn leaf. Adults are on wing from July to early November in one generation per year. Adults are nocturnal and may rest on buildings during the day. The larvae feed on the leaves of Alnus, Fraxinus, Tilia, Betula, Ulmus, Carya, Acer, Quercus, and Populus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 2 | Elk Island National Park | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Maple Spanworm Moth sighting in Elk Island National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 85th most-seen of the 112 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
August and September
In those months about 20% of wildlife watchers report a Maple Spanworm Moth in Elk Island National Park on a given day, against under 5% in October to June, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Maple Spanworm Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Maple Spanworm Moth sightings, Elk Island National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Cape Breton Highlands National Park (Canada, about 10%).
Same family: Geometridae
The closest relatives of the Maple Spanworm Moth that you can see in Elk Island National Park (family Geometridae, Geometer Moths) are Linden Looper Moth (about 10%), Large Maple Spanworm Moth (about 10%) and Pale Beauty (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Maple Spanworm Moth is recorded against all the insects logged in Elk Island National Park (6 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.
