Bug FAQEufernaldia cadarellus
Eufernaldia cadarellus · Order: Lepidoptera · Family: Crambidae
The moth has a wingspan of about 18 mm. Its forewings are pale straw with silvery-white veins and the hindwings are grayish with a yellowish-fawn edge. Adults are seen from May through July and again in September.
Source: Wikipedia
How to recognize it
Forewings are pale straw with silvery-white veins; hindwings are uniform grayish with a yellowish-fawn outer margin.
Source: Wikipedia
Size
The wingspan measures roughly 18 mm.
Source: Wikipedia
Life cycle
Adults are on the wing from May to July and again in September.
Source: Wikipedia
When you see it
Flight periods occur in late spring through midsummer and once more in early fall.
Source: Wikipedia
Where it is found in the US
Recorded in 5 of 51 states and DC. Most records: Arizona, Texas, New Mexico, Montana, Mississippi.
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 Eufernaldia cadarellus adults active?
Adults fly from May through July and return in September.
Source: Wikipedia
Same family (Crambidae)
Box Tree MothCydalima perspectalisDamages trees, gardens or crops
Celery Leaftier MothUdea rubigalis
Elegant Grass-veneerMicrocrambus elegans
Hawaiian Beet Webworm MothSpoladea recurvalisDamages trees, gardens or crops
Garden Grass-veneerChrysoteuchia culmellaDamages trees, gardens or crops
Bluegrass Webworm MothParapediasia teterrellusDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Eufernaldia_cadarellus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.