Bug FAQSaddled Yellowhorn
Colocasia flavicornis · Order: Lepidoptera · Family: Noctuidae
Also called: Yellowhorn, Saddled Yellowhorn Moth, Yellowhorn Moth
Source: Wikipedia
It lives east of the Rocky Mountains in North America. Adults fly from March through September and there are two generations each year. The caterpillars feed on a variety of deciduous trees, which can harm those trees.
Source: Wikipedia
Where it lives
It is found east of the Rocky Mountains in North America.
Source: Wikipedia
Life cycle
There are two generations each year.
Source: Wikipedia
When you see it
Adults are on the wing from March to September.
Source: Wikipedia
Where it comes from
Its native range is east of the Rocky Mountains in North America.
Source: Wikipedia
Where it is found in the US
Recorded in 28 of 51 states and DC. Most records: Ohio, Vermont, Alabama, Maryland, Virginia, Pennsylvania, New York, North Carolina.
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
How many generations does this bug have each year?
There are two generations 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/Colocasia_flavicornis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.