Bug FAQNymphula Moth
Elophila ekthlipsis · Order: Lepidoptera · Family: Crambidae
The Nymphula moth has a wingspan of about 18 to 26 mm and builds a portable case. It lives around ponds and marshes in the Great Lakes region of North America, including several US states and Canadian provinces. Adults are active from June through August.
Source: Wikipedia
How to recognize it
They construct a portable case.
Source: Wikipedia
Size
Wingspan ranges from 18 mm to 26 mm.
Source: Wikipedia
Where it lives
Found in pond and marsh habitats.
Source: Wikipedia
When you see it
Adults are on the wing from June to August.
Source: Wikipedia
Where it is found in the US
Recorded in 10 of 51 states and DC. Most records: Michigan, Maine, Minnesota, Wisconsin, New York, New Hampshire, Ohio, Massachusetts.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
Where do Nymphula moths live?
They inhabit ponds and marshes in the Great Lakes region of North America.
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/Elophila_ekthlipsis
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.