Bug FAQFawn Brown Dart and Allies
Euxoa pleuritica · Order: Lepidoptera · Family: Noctuidae
Also called: Fawn Brown Dart, Fawn Brown Dart Moth
The fawn brown dart moth has a wingspan of about 34 to 38 mm. Adults fly from June through August and there is one generation each year. Its larvae can be raised on the plant Salsola kali.
Source: Wikipedia
How to recognize it
Euxoa pleuritica, called the fawn brown dart, belongs to the Noctuidae family.
Source: Wikipedia
Size
The moth’s wingspan ranges from 34 to 38 mm.
Source: Wikipedia
What it eats
Larvae have been successfully reared on the plant Salsola kali.
Source: Wikipedia
Life cycle
The species produces one generation per year.
Source: Wikipedia
When you see it
Adult moths are on the wing from June through August.
Source: Wikipedia
Where it comes from
Its native range covers southern Canada and the northern United States, spanning from eastern provinces to the western coast.
Source: Wikipedia
Where it is found in the US
Recorded in 15 of 51 states and DC. Most records: Michigan, Montana, Colorado, New Mexico, Washington, Massachusetts, Arizona, Wyoming.
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
Source: GBIF
Questions people ask
How many generations does this moth have each year?
There is one generation per year.
Source: Wikipedia
Same family (Noctuidae)
Ipsilon Dart MothAgrotis ipsilonDamages trees, gardens or crops
Fall Armyworm MothSpodoptera frugiperdaDamages trees, gardens or crops
Army Cutworm MothEuxoa auxiliarisDamages trees, gardens or crops
Large Yellow UnderwingNoctua pronubaDamages trees, gardens or crops
Silver ΥAutographa gamma
American DaggerAcronicta americanaCan irritate skinSources
- Wikipedia: https://en.wikipedia.org/wiki/Euxoa_pleuritica
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.