Bug FAQEuxoa bicollaris
Euxoa bicollaris · Order: Lepidoptera · Family: Noctuidae
The adult has a wingspan of roughly 32 mm. It lives mainly in California and its range reaches up to southern British Columbia.
Source: Wikipedia
Size
Wingspan is about 32 mm.
Source: Wikipedia
Where it comes from
Found chiefly in California, extending north to the southern edge of British Columbia.
Source: Wikipedia
Where it is found in the US
Recorded in 5 of 51 states and DC. Most records: California, Oregon, Washington, Idaho, Montana.
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
Source: GBIF
More photos
Questions people ask
Where is Euxoa bicollaris found?
It is most common in California and its range reaches up to southern British Columbia.
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_bicollaris
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-29 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-29.