Anageshna primordialis
In 3 days ~10% in a week ~20%
Anageshna is a monotypic moth genus of the family Crambidae described by Eugene G. Munroe in 1956. Its only species, Anageshna primordialis, the yellow-spotted webworm, was described by Harrison Gray Dyar Jr. in 1907. It is found in the US states of Alabama, Arkansas, Arizona, Florida, Georgia, Iowa, Illinois, Kansas, Louisiana, Massachusetts, Maryland, Maine, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Texas, Virginia and West Virginia.
The wingspan is about 11 mm (0.43 in). Adults are on wing from August to November. Its host plants are unknown. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Montreal | 🇨🇦 Canada | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | Houston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Yellow-Spotted Webworm Moth sighting in Great Smoky Mountains National Park on a given day, based on 5 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 Yellow-Spotted Webworm Moth in Great Smoky Mountains National Park on a given day, against under 5% in May to March, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Yellow-Spotted Webworm 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.
2nd of 2
Of the 2 parks where we can rate Yellow-Spotted Webworm Moth sightings, Great Smoky Mountains National Park ranks 2nd at under 5%. The best odds are in Big Cypress National Preserve (United States, about 10%).
Same family: Crambidae
The closest relatives of the Yellow-Spotted Webworm Moth that you can see in Great Smoky Mountains National Park (family Crambidae, Crambid Snout Moths) are Basswood Leafroller Moth (about 10%), Hollow-Spotted Blepharomastix Moth (about 10%) and Elegant Grass-Veneer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-Spotted Webworm Moth is recorded against all the insects logged in Great Smoky Mountains 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.
