Bug FAQFerruginous Eulia Moth
Eulia ministrana · Order: Lepidoptera · Family: Tortricidae
Also called: Brassy Tortrix, Brassy Twist
The Ferruginous Eulia Moth has a wingspan of about 18 to 24 mm and a dark fuscous head. Adults fly in May and June and there is one generation each year.
Source: Wikipedia
How to recognize it
Forewings are narrowed at the front, pale ochreous, with deep ferruginous markings on the costa base, a large triangular dorsal suffusion, and the terminal streak. The wing fringe (cilia) is dark ferruginous-fuscous. Hindwings are grey, with a darker edge (termen).
Source: Wikipedia
Size
Wingspan ranges from 18 to 24 mm.
Source: Wikipedia
Where it lives
It occurs in the Palearctic and Nearctic regions.
Source: Wikipedia
What it eats
Larvae feed on shrubs and trees such as silver birch, common buckthorn, hazel and sweet chestnut.
Source: Wikipedia
Life cycle
Adults are on the wing from May to June. The species produces one generation per year.
Source: Wikipedia
When you see it
Adults are active in late spring, specifically May and June.
Source: Wikipedia
Where it comes from
Its range includes both the Palearctic and Nearctic realms.
Source: Wikipedia
Where it is found in the US
Recorded in 22 of 51 states and DC. Most records: Vermont, Maine, New Hampshire, Alaska, Massachusetts, New York, Washington, Minnesota.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see adult Ferruginous Eulia Moths?
Adults fly in May and June, which is their only active period each year.
Source: Wikipedia
What plants do the caterpillars eat?
The larvae feed on a variety of shrubs and trees, including birch, buckthorn, hazel and sweet chestnut.
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/Eulia_ministrana
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.