Macaria pustularia
In 3 days ~40% in a week ~70%
Speranza pustularia, the lesser maple spanworm, is a moth of the family Geometridae native to North America. Adults are on wing from May to July in the south and from June to August in the north. There is one generation per year. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 3 | Acadia National Park | 🇺🇸 United States | |
| 4 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Detroit | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Montreal | 🇨🇦 Canada | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Boston | 🇺🇸 United States | |
| 7 | Baltimore | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States | |
| 9 | Washington | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Lesser Maple Spanworm Moth sighting in Cape Breton Highlands National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 18th most-seen of the 68 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 30% of wildlife watchers report a Lesser Maple Spanworm Moth in Cape Breton Highlands National Park on a given day, against under 5% in February–June and October–December, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Lesser Maple Spanworm Moth sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 4 parks where we can rate Lesser Maple Spanworm Moth sightings, Cape Breton Highlands National Park has the highest daily chance: about 20%. Next come Great Smoky Mountains National Park (United States, about 10%) and Acadia National Park (United States, about 10%).
Same family: Geometridae
The closest relatives of the Lesser Maple Spanworm Moth that you can see in Cape Breton Highlands National Park (family Geometridae, Geometer Moths) are Pale Beauty (about 10%), Maple Spanworm Moth (about 10%) and Curved-Toothed Geometer Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lesser Maple Spanworm Moth is recorded against all the insects logged in Cape Breton Highlands National Park (14 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.
