Bug FAQGenerous Pyrausta Moth
Pyrausta generosa · Order: Lepidoptera · Family: Crambidae
The Generous Pyrausta Moth has a wingspan of about 18 to 21 mm and belongs to the Crambidae family. It lives in undisturbed aspen parkland and mixed woods across North America, from Ontario and Alberta down to Florida and Missouri, and adults fly from late May through late July. Its larvae are thought to feed on mint (Mentha) species.
Source: Wikipedia
Size
The wingspan ranges from 18 to 21 mm.
Source: Wikipedia
What it eats
The larvae possibly feed on plants of the Mentha genus.
Source: Wikipedia
Life cycle
Adults are on the wing from late May to late July.
Source: Wikipedia
When you see it
The flight period for adults spans late May through late July.
Source: Wikipedia
Where it comes from
It is found in North America, recorded from Ontario to Alberta and as far south as Florida and Missouri.
Source: Wikipedia
Where it is found in the US
Recorded in 17 of 51 states and DC. Most records: Minnesota, Missouri, Nebraska, Illinois, Virginia, Kansas, Oklahoma, Indiana.
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 are Generous Pyrausta Moths active?
Adults are active from late May until late 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/Pyrausta_generosa
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.