Rheumaptera prunivorata
In 3 days ~20% in a week ~30%
Rheumaptera prunivorata or Hydria prunivorata (in some schemes), the cherry scallop shell or Ferguson's scallop shell, is a moth of the family Geometridae. The species was first described by Alexander Douglas Campbell Ferguson in 1955. It is found in North America from New Brunswick, Quebec and Ontario in Canada, through the eastern parts of the United States, down to Georgia.
The wingspan is about 35 mm. The moth flies from May to September depending on the location. The larvae feed on Prunus virginiana. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Cherry Scallop Shell Moth sighting in Great Smoky Mountains National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 334th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
March, May and July
In those months about 10% of wildlife watchers report a Cherry Scallop Shell Moth in Great Smoky Mountains National Park on a given day, against under 5% in April, June and August–February, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Cherry Scallop Shell Moth sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen 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 Cherry Scallop Shell Moth sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Cherry Scallop Shell Moth that you can see in Great Smoky Mountains National Park (family Geometridae, Geometer Moths) are Tulip-Tree Beauty (about 30%), White-Striped Black (about 20%) and Pale Beauty (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cherry Scallop Shell Moth is recorded against all the insects logged in Great Smoky Mountains National Park (14 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.
