Hesperumia sulphuraria
In 3 days ~10% in a week ~20%
Hesperumia sulphuraria, commonly known as the sulphur moth or sulphur wave, is a species of geometrid moth in the family Geometridae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Glacier National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Edmonton | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Sulphur Moth sighting in Edmonton on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 230th most-seen of the 390 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.
July
In that month about 10% of wildlife watchers report a Sulphur Moth in Edmonton on a given day, against under 5% in August to June, the lowest months. That is one of Edmonton's wettest months, with about 95 mm of rain against 20 mm in February.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Sulphur Moth sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Edmonton, in our data
Edmonton is the only city on Wallace's Line with enough records to rate Sulphur Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Sulphur Moth that you can see in Edmonton (family Geometridae, Geometer Moths) are Maple Spanworm Moth (about 10%) and Linden Looper Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sulphur Moth is recorded against all the insects logged in Edmonton (10 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.
