Bug FAQHollow-spotted Blepharomastix Moth
Blepharomastix ranalis · Order: Lepidoptera · Family: Crambidae
The moth has pale tan wings with dark brown lines and hollow-looking spots outlined in brown on the forewings. It lives across much of the United States from the Southwest to the Northeast and into Canada, and is also found in Mexico. Adults are seen from March through October, most often between April and August.
Source: Wikipedia
When you see it
Adults are most common between April and August, but can appear from March through October.
Source: Wikipedia
Where it is found in the US
Recorded in 39 of 51 states and DC. Most records: Texas, Maryland, Massachusetts, Pennsylvania, Virginia, New York, Alabama, 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; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
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/Blepharomastix_ranalis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.