Chrysanympha formosa
In 3 days ~10% in a week ~30%
Chrysanympha formosa, the Formosa looper, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1865. It is found in North America from Newfoundland west to Manitoba and south to the mountains of North Carolina and Tennessee.
The wingspan is 30–35 mm. Adults are on wing from July to August in Alberta and from June to August in the Great Smoky Mountains National Park. There is one generation per year. The larvae have been recorded on Gaylussacia dumosa and Vaccinium species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Formosa Looper Moth sighting in Acadia National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 347th most-seen of the 405 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Formosa Looper Moth in Acadia National Park on a given day, against under 5% in August to June, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Formosa Looper Moth sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Acadia National Park, in our data
Acadia National Park is the only park on Wallace's Line with enough records to rate Formosa Looper Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Noctuidae
The closest relatives of the Formosa Looper Moth that you can see in Acadia National Park (family Noctuidae, Cutworm Moths and Allies) are American Dagger (about 10%), Brown-Hooded Owlet (about 10%) and Eastern Panthea Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Formosa Looper Moth is recorded against all the insects logged in Acadia National Park (5 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.
