Bug FAQGirard's Grass-veneer
Crambus girardellus · Order: Lepidoptera · Family: Crambidae
Also called: Girard's Grass-veneer Moth
Girard's grass-veneer (Crambus girardellus) is a moth in the family Crambidae, first described in 1860. Adults have a wingspan of about 25 to 28 mm and are on the wing in June and July. The larvae live underground and feed on the roots of grass species.
Source: Wikipedia
How to recognize it
Crambus girardellus, known as Girard's grass-veneer moth, belongs to the family Crambidae and was described by James Brackenridge Clemens in 1860.
Source: Wikipedia
Size
The moth’s wingspan ranges from 25 to 28 mm.
Source: Wikipedia
What it eats
Larvae feed on the roots of various grass species.
Source: Wikipedia
Life cycle
Adult moths are active during June and July.
Source: Wikipedia
When you see it
The flight period for adults is in early to mid-summer, specifically June and July.
Source: Wikipedia
Where it comes from
Its native range covers many regions of North America, such as the Canadian provinces and northeastern US states listed above.
Source: Wikipedia
Where it is found in the US
Recorded in 25 of 51 states and DC. Most records: Vermont, Michigan, Massachusetts, New York, Pennsylvania, New Hampshire, Connecticut, Ohio.
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
When can I see adult Girard's grass-veneer moths?
Adults are on the wing in June and July.
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/Crambus_girardellus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.