Bug FAQMelonworm Moth
Diaphania hyalinata · Order: Lepidoptera · Family: Crambidae
The adult moth has a wingspan of about 27 to 30 mm. It lives in eastern North America and extends south through Central and South America, including the Caribbean and Suriname.
Source: Wikipedia
Size
Wingspan measures 27 to 30 mm.
Source: Wikipedia
When you see it
Flight period matches the same timing as the life-cycle information.
Source: Wikipedia
Where it comes from
Found in eastern North America and southward through Central and South America, the Caribbean and Suriname.
Source: Wikipedia
Where it is found in the US
Recorded in 35 of 51 states and DC. Most records: Texas, Florida, Louisiana, Oklahoma, Mississippi, Missouri, Alabama, South Carolina.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: 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/Diaphania_hyalinata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.