Catocala nebulosa
In 3 days ~10% in a week ~20%
Catocala nebulosa, the clouded underwing, is a moth of the family Erebidae. The species was first described by William Henry Edwards in 1864. It is found in North America from southern Ontario south through Tennessee to Florida, west to Texas and eastern Oklahoma and north to Iowa, Michigan, Wisconsin and Minnesota.
The wingspan is 75–86 mm. Adults are on wing from July to September depending on the location. There is probably one generation per year. The larvae feed on Carya cordiformis and Juglans nigra. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Clouded Underwing sighting in Montreal on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 842nd most-seen of the 926 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 Clouded Underwing in Montreal on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Clouded Underwing sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Clouded Underwing sightings, Montreal has the highest daily chance: under 5%. Next come New York City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Clouded Underwing is recorded against all the insects logged in Montreal (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.
