Greater Idia Moth

Idia majoralis · Order: Lepidoptera · Family: Erebidae

Also called: Woodrat Nest Moth, Greater Idia

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Greater Idia Moth
Photo: Adrienne van den Beemt, CC BY

The Greater Idia Moth occurs in Canada and the United States. Specifically it has been recorded in Ontario, Quebec, Illinois, Wisconsin and Missouri.

Source: Wikipedia

Where it comes from

Its range includes Ontario, Quebec, Illinois, Wisconsin and Missouri.

Source: Wikipedia

Where it is found in the US

Recorded in 23 of 51 states and DC. Most records: South Dakota, Alabama, Colorado, Missouri, Oklahoma, Kansas, New York, Ohio.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Greater Idia Moth photo 2
Photo: Alina Martin, CC BY
Greater Idia Moth photo 3
Photo: Ilona, CC BY-SA
Greater Idia Moth photo 4
Photo: nebrooks, CC BY
Greater Idia Moth photo 5
Photo: Shinobu, CC BY

Same family (Erebidae)

Spongy MothSpongy MothLymantria disparDamages trees, gardens or cropsFall Webworm MothFall Webworm MothHyphantria cuneaDamages trees, gardens or cropsBrown-tail MothBrown-tail MothEuproctis chrysorrhoeaCan irritate skinIsabella Tiger MothIsabella Tiger MothPyrrharctia isabellaVirginian Tiger MothVirginian Tiger MothSpilosoma virginicaCan irritate skinSalt Marsh MothSalt Marsh MothEstigmene acreaDamages trees, gardens or crops

Sources

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

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

Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.

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.