Catocala briseis
In 3 days ~10% in a week ~20%
Catocala briseis, the Briseis underwing or ribbed underwing, is a moth of the family Erebidae. The species was first described by William Henry Edwards in 1864. It is found across the North American Boreal forest region from Newfoundland to the Pacific, south to Massachusetts and Pennsylvania.
The wingspan is 59–65 mm. Adults are on wing from July to September depending on the location. The larvae feed on Populus species, including Populus tremuloides and Salix species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Briseis Underwing Moth sighting in Edmonton on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 336th 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.
August
In that month about 10% of wildlife watchers report a Briseis Underwing Moth in Edmonton on a given day, against under 5% in September to July, the lowest months.
Yes
Of the 2 cities where we can rate Briseis Underwing Moth sightings, Edmonton has the highest daily chance: under 5%. Next come Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Briseis Underwing Moth is recorded against all the insects logged in Edmonton (5 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.
