Apoda y-inversa
In 3 days ~20% in a week ~30%
Apoda y-inversum, the inverted Y slug moth or yellow-collared slug moth, is a moth of the family Limacodidae. It is found in North America from Quebec and Ontario, south to Florida, west to Oklahoma and Mississippi. The wingspan is 21–30 mm. Adults are on wing from May to August.
The larvae feed on the leaves of beech, hickory, ironwood and oak. 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 | Dallas | 🇺🇸 United States | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Yellow-Collared Slug Moth sighting in Shenandoah National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 363rd most-seen of the 723 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.
June–July and September
In those months about 10% of wildlife watchers report a Yellow-Collared Slug Moth in Shenandoah National Park on a given day, against under 5% in August and October–May, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Yellow-Collared Slug Moth sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Yellow-Collared Slug Moth sightings, Shenandoah National Park has the highest daily chance: about 10%. Next come Great Smoky Mountains National Park (United States, under 5%).
Same family: Limacodidae
The closest relatives of the Yellow-Collared Slug Moth that you can see in Shenandoah National Park (family Limacodidae, Slug Caterpillar Moths) are Skiff Moth (about 10%), Crowned Slug Moth (about 10%) and Smaller Parasa Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-Collared Slug Moth is recorded against all the insects logged in Shenandoah 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.
