Bug FAQGiant Eucosma Moth
Eucosma giganteana · Order: Lepidoptera · Family: Tortricidae
Also called: Giant Eucosma
The Giant Eucosma Moth has a wingspan of about 34 to 38 mm. It lives in the United States, recorded from states such as North Carolina, Florida, Minnesota, Texas, Pennsylvania, North Dakota and New Mexico. Adults can be seen flying in January and from April through September.
Source: Wikipedia
Size
Wingspan ranges from 34 to 38 mm.
Source: Wikipedia
Where it lives
Found throughout the United States.
Source: Wikipedia
What it eats
Larvae feed on the plant Silphium perfoliatum.
Source: Wikipedia
When you see it
Active months include January and the period from April through September.
Source: Wikipedia
Where it is found in the US
Recorded in 20 of 51 states and DC. Most records: Illinois, Mississippi, Wisconsin, Ohio, Indiana, Iowa, Minnesota, Missouri.
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
More photos
Questions people ask
When are Giant Eucosma Moths active?
Adults fly in January and again from April through September.
Source: Wikipedia
Same family (Tortricidae)
Oblique-banded Leafroller MothChoristoneura rosaceanaDamages trees, gardens or crops
Garden TortrixClepsis peritanaDamages trees, gardens or crops
Common MarbleSyricoris lacunanaDamages trees, gardens or crops
Red-banded Leafroller MothArgyrotaenia velutinanaDamages trees, gardens or crops
Light Brown Apple MothEpiphyas postvittanaDamages trees, gardens or crops
Aster and Reddish Eucosma Moths and AlliesEucosma parmatanaSources
- Wikipedia: https://en.wikipedia.org/wiki/Eucosma_giganteana
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.