Bug FAQGrotella tricolor
Grotella tricolor · Order: Lepidoptera · Family: Noctuidae
The adult moth has a wingspan of about 20 to 23 mm. It lives in California and Arizona in the United States. Adults are active from August through September.
Source: Wikipedia
Size
The wingspan measures roughly 20 to 23 mm.
Source: Wikipedia
When you see it
Adults fly during August and September.
Source: Wikipedia
Where it comes from
Its range includes California and Arizona in the United States.
Source: Wikipedia
Where it is found in the US
Recorded in 3 of 51 states and DC. Most records: Arizona, New Mexico, California.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When are Grotella tricolor moths active?
Adults are on the wing from August to September.
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/Grotella_tricolor
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.