Nemoria mimosaria
In 3 days ~10% in a week ~20%
Nemoria mimosaria, the white-fringed emerald or flanged looper, is a moth of the family Geometridae. The species was first described by Achille Guenée in 1858. It is found from Nova Scotia to south-eastern Alberta, south to Virginia, Illinois, and Texas.
The wingspan is about 26 mm. Adults are on wing from mid to late June. The larvae feed on various deciduous shrubs and trees and conifer trees, including Betula papyrifera, Abies balsamifera, Salix, Alnus, and Myrica asplenifolia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a White-Fringed Emerald sighting in Great Smoky Mountains National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 628th most-seen of the 822 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.
April
In that month about 10% of wildlife watchers report a White-Fringed Emerald in Great Smoky Mountains National Park on a given day, against under 5% in May to March, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most White-Fringed Emerald sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Great Smoky Mountains National Park, in our data
Great Smoky Mountains National Park is the only park on Wallace's Line with enough records to rate White-Fringed Emerald sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the White-Fringed Emerald is recorded against all the insects logged in Great Smoky Mountains National Park (6 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.
