Washington Udea Moth

Udea washingtonalis · Order: Lepidoptera · Family: Crambidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Washington Udea Moth
Photo: Alexandria 'Alex' Wenninger, CC BY

The Washington Udea moth has a wingspan of about 21 mm and is found in North America, specifically Alaska, British Columbia, California, Montana and Washington. Adults are on the wing from May to August.

Source: Wikipedia

Size

The wingspan is about 21 mm.

Source: Wikipedia

Where it comes from

Its native range includes those same North American locations.

Source: Wikipedia

Where it is found in the US

Recorded in 5 of 51 states and DC. Most records: Alaska, Washington, Oregon, California, Montana.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Washington Udea Moth photo 2
Photo: Peter Abrahamsen, CC BY
Washington Udea Moth photo 3
Photo: iNaturalist user, CC0
Washington Udea Moth photo 4
Photo: Brodie Cass Talbott, CC BY
Washington Udea Moth photo 5
Photo: Walter A Siegmund, CC BY-SA

Same family (Crambidae)

Box Tree MothBox Tree MothCydalima perspectalisDamages trees, gardens or cropsCelery Leaftier MothCelery Leaftier MothUdea rubigalisElegant Grass-veneerElegant Grass-veneerMicrocrambus elegansHawaiian Beet Webworm MothHawaiian Beet Webworm MothSpoladea recurvalisDamages trees, gardens or cropsGarden Grass-veneerGarden Grass-veneerChrysoteuchia culmellaDamages trees, gardens or cropsBluegrass Webworm MothBluegrass Webworm MothParapediasia teterrellusDamages trees, gardens or crops

Sources

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

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