Isa textula
In 3 days ~10% in a week ~30%
Isa textula, the crowned slug moth or skiff moth is a moth of the family Limacodidae. It is found in North America from Minnesota, southern Ontario and Massachusetts to Florida, Texas, and Mississippi. The larvae feed on the leaves of various trees, including oak, cherry, maple, basswood, elm and beech.
Another moth, Prolimacodes badia, is also referred to by the common name skiff moth. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Orlando | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Crowned Slug Moth sighting in Great Smoky Mountains National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 441st 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 30%, if each day is a fresh chance.
October
In that month about 20% of wildlife watchers report a Crowned Slug Moth in Great Smoky Mountains National Park on a given day, against under 5% in December to August, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Crowned Slug Moth 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.
2nd of 2
Of the 2 parks where we can rate Crowned Slug Moth sightings, Great Smoky Mountains National Park ranks 2nd at under 5%. The best odds are in Shenandoah National Park (United States, about 10%).
Same family: Limacodidae
The closest relatives of the Crowned Slug Moth that you can see in Great Smoky Mountains National Park (family Limacodidae, Slug Caterpillar Moths) are Yellow-Shouldered Slug Moth (about 10%), Spiny Oak-Slug Moth (about 10%) and Saddleback Caterpillar Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Crowned Slug Moth is recorded against all the insects logged in Great Smoky Mountains National Park (9 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.
