Nadata gibbosa
In 3 days ~10% in a week ~20%
The rough prominent (Nadata gibbosa) is a moth of the family Notodontidae, subfamily Phalerinae. It is also known as the white-dotted prominent and the tawny prominent. The species was first described by James Edward Smith in 1797. This common moth is found across North America from the northern boreal forests to as far south as Florida. It is most common in deciduous forests at some elevation. It is nocturnal but attracted to lights. The moths start to fly soon after dusk and return to resting places some time before dawn breaks (Fullard & Napoleone 2001). The adults live through late spring and early summer, and larvae are active until fall. They then pupate until the following spring.
The moth is tan or dull orange, with two small silver spots on each forewing. The wingspan is approximately 2 inches (5 cm). It sports a pointed thoracic tuft between its wings. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 3 | Gros Morne National Park | 🇨🇦 Canada | |
| 4 | Shenandoah National Park | 🇺🇸 United States | |
| 5 | Great Bear Rainforest | 🇨🇦 Canada | |
| 6 | Point Pelee National Park | 🇨🇦 Canada | |
| 7 | Acadia National Park | 🇺🇸 United States | |
| 8 | Glacier National Park | 🇺🇸 United States | |
| 9 | Olympic National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | Vancouver | 🇨🇦 Canada | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 6 | Dallas | 🇺🇸 United States | |
| 7 | Chicago | 🇺🇸 United States | |
| 8 | Seattle | 🇺🇸 United States | |
| 9 | Philadelphia | 🇺🇸 United States | |
| 10 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a White-Dotted Prominent sighting in Portland on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 466th most-seen of the 507 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 White-Dotted Prominent in Portland on a given day, so our monthly data shows no clear season.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most White-Dotted Prominent sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 13 cities where we can rate White-Dotted Prominent sightings, Portland ranks 11th at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%), Boston (United States, under 5%) and Washington (United States, under 5%).
Same order: Lepidoptera
The closest relatives of the White-Dotted Prominent that you can see in Portland (order Lepidoptera, Butterflies and Moths) are Large Yellow Underwing (about 20%), Gray Hairstreak (about 20%) and Western Tiger Swallowtail (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-Dotted Prominent is recorded against all the insects logged in Portland (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.
