Early Button Slug Moth

Early Button Slug Moth

Tortricidia testacea

Daily sighting probability ~10% · With luck
at Great Smoky Mountains National Park

In 3 days ~20% in a week ~30%

14 Verified sightings at Great Smoky Mountains National Park From 2019 to 2026
25 In all 2 parks
April Best month
🌙 Nocturnal When it's spotted

About the Early Button Slug Moth

The warm-chevroned moth (Tortricidia testacea) is a moth of the family Limacodidae. It is found from Nova Scotia west and south to Manitoba, Missouri and Mississippi. There is also a record from South Carolina. The wingspan is 15–26 mm. Adults are on wing from April to August.

The larvae feed on beech, birch, black cherry, chestnut, oak and witch-hazel. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Great Smoky Mountains National Park 🇺🇸 United States
~10%
2 Shenandoah National Park 🇺🇸 United States
~10%

Before you go

What are the chances of seeing an Early Button Slug Moth in Great Smoky Mountains National Park?

With luck

About 10% of wildlife watchers report an Early Button Slug 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.

When is the best time to see an Early Button Slug Moth in Great Smoky Mountains National Park?

April to June

In those months about 10% of wildlife watchers report an Early Button Slug Moth in Great Smoky Mountains National Park on a given day, against under 5% in July to March, the lowest months.

What time of day is best to see an Early Button Slug Moth?

Between 9 pm and midnight

Across all the parks we cover, that three-hour window holds the most Early Button Slug Moth sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.

Is Great Smoky Mountains National Park the best place to see an Early Button Slug Moth?

Yes

Of the 2 parks where we can rate Early Button Slug Moth sightings, Great Smoky Mountains National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, about 10%).

Which relatives of the Early Button Slug Moth live in Great Smoky Mountains National Park?

Same family: Limacodidae

The closest relatives of the Early Button 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.

Where does the Early Button Slug Moth sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Early Button Slug 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.

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