Bug FAQBlack Langessa Moth
Langessa nomophilalis · Order: Lepidoptera · Family: Crambidae
Langessa nomophilalis is a small moth with a wingspan of about 20 to 22 mm. It lives in the southeastern United States, Alabama, Florida and South Carolina, where adults can be seen flying throughout the year.
Source: Wikipedia
Size
The wingspan ranges from 20 to 22 mm.
Source: Wikipedia
Where it lives
It has been recorded in Alabama, Florida and South Carolina.
Source: Wikipedia
What it eats
The larvae feed on aquatic plants.
Source: Wikipedia
Life cycle
Adults are on the wing throughout the entire year.
Source: Wikipedia
When you see it
Adults can be found flying in any month, as they are active year-round.
Source: Wikipedia
Where it comes from
Its known range includes Alabama, Florida and South Carolina in the United States.
Source: Wikipedia
Where it is found in the US
Recorded in 6 of 51 states and DC. Most records: Florida, Mississippi, Alabama, North Carolina, Texas, Virginia.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When are adults active?
Adults are on the wing all year, so you can see them any month.
Source: Wikipedia
Where is this moth found?
It has been recorded in Alabama, Florida and South Carolina.
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/Langessa
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.