Bug FAQYellow-veined Moth
Microtheoris ophionalis · Order: Lepidoptera · Family: Crambidae
The forewings measure about 5.5 to 7 mm long. Adults fly from May through October in the northern part of its range.
Source: Wikipedia
Size
Forewing length is 5.5 to 7 mm.
Source: Wikipedia
Where it comes from
Found from southern Canada across the United States and Mexico into South America.
Source: Wikipedia
Where it is found in the US
Recorded in 29 of 51 states and DC. Most records: Texas, Arizona, California, Florida, New Mexico, Washington, Oregon, Michigan.
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 are adult Yellow-veined Moths active?
Adults are on the wing from May through October in the northern part of their range.
Source: Wikipedia
Same family (Crambidae)
Box Tree MothCydalima perspectalisDamages trees, gardens or crops
Celery Leaftier MothUdea rubigalisDamages trees, gardens or crops
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/Microtheoris_ophionalis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.