Clear and Flat Darts and Allies

Euxoa declarata · Order: Lepidoptera · Family: Noctuidae

Also called: Clear Dart, Clear Dart Moth

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Clear and Flat Darts and Allies
Photo: iNaturalist user, CC0

The clear dart moth has a wingspan of about 31 to 37 millimetres. Adults fly from midsummer through early autumn, typically July to September. It produces one generation each year.

Source: Wikipedia

How to recognize it

Euxoa declarata belongs to the Noctuidae family of moths.

Source: Wikipedia

Size

Its wingspan ranges between 31 and 37 mm.

Source: Wikipedia

Where it lives

In Canada it occurs in provinces from Ontario to British Columbia and up to the Yukon. In the United States it is found as far east as Minnesota and North Carolina and as far west as Arizona, New Mexico and California. Its western range extends to central Alaska.

Source: Wikipedia

Life cycle

The species has a single generation each year.

Source: Wikipedia

When you see it

Adults are on the wing from July through September.

Source: Wikipedia

Where it comes from

It is native to Canada and the United States, including many provinces and states across the north and west.

Source: Wikipedia

Where it is found in the US

Recorded in 19 of 51 states and DC. Most records: Montana, Michigan, Oregon, Colorado, Idaho, Washington, California, Minnesota.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

When are clear dart moths active?

Adults are typically seen flying between July and September.

Source: Wikipedia

How big are clear dart moths?

Their wingspan measures roughly 31 to 37 mm.

Source: Wikipedia

How many generations do they have each year?

They produce one generation annually.

Source: Wikipedia

Same family (Noctuidae)

Sources

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

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

Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.

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.