Crowned Slug Moth

Isa textula · Order: Lepidoptera · Family: Limacodidae

Also called: Crowned Slug

Damages trees, gardens or crops. It can damage trees and garden plants by feeding on their leaves.

Source: Wikipedia

Crowned Slug Moth
Photo: christine123, CC BY

The crowned slug moth, also called Isa textula or skiff moth, belongs to the Limacodidae family. It lives in North America, ranging from Minnesota, southern Ontario and Massachusetts down to Florida, Texas, and Mississippi. Its caterpillars eat the leaves of many trees such as oak, cherry, maple, basswood, elm and beech, which can harm those plants.

Source: Wikipedia

How to recognize it

Isa textula is the scientific name of the crowned slug moth, also known as the skiff moth.

Source: Wikipedia

Where it lives

The moth is found across a broad area of North America from the Upper Midwest and southern Canada down to the Gulf Coast.

Source: Wikipedia

What it eats

Larvae feed on the foliage of oak, cherry, maple, basswood, elm and beech trees.

Source: Wikipedia

Where it comes from

Its native range includes states such as Minnesota, Massachusetts, Texas, Florida, Mississippi and the province of southern Ontario.

Source: Wikipedia

Lookalikes

Another moth, Prolimacodes badia, is also called a skiff moth.

Source: Wikipedia

Where it is found in the US

Recorded in 35 of 51 states and DC. Most records: North Carolina, Massachusetts, Ohio, Virginia, Pennsylvania, Maryland, Alabama, New York.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in United States; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Crowned Slug Moth photo 3
Photo: Kim H, CC BY-SA
Crowned Slug Moth photo 4
Photo: unknown, CC0
Crowned Slug Moth photo 5
Photo: unknown, CC0
Crowned Slug Moth photo 6
Photo: Cherrie Corey, CC BY

Questions people ask

What trees do the larvae of the crowned slug moth eat?

They feed on oak, cherry, maple, basswood, elm and beech leaves.

Source: Wikipedia

Where is the crowned slug moth found?

It occurs in North America from Minnesota and southern Ontario down to Florida, Texas and Mississippi.

Source: Wikipedia

Same family (Limacodidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Isa_textula

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.