Bug FAQPyrausta flavofascialis
Pyrausta flavofascialis · Order: Lepidoptera · Family: Crambidae
The moth’s wingspan is about 21 mm. Its forewings start olive-green at the base, turn yellowish, and the middle and edge areas are purple, while the hindwings are pale with a dark terminal line.
Source: Wikipedia
How to recognize it
The forewings are olive at the base, become yellowish, and have a purple middle and edge; the hindwings are pale with a dark terminal line.
Source: Wikipedia
Size
The wingspan measures roughly 21 mm.
Source: Wikipedia
Where it lives
It is also found in Mexico.
Source: Wikipedia
When you see it
Adults fly in May and again from July through September.
Source: Wikipedia
Where it comes from
In North America it is known from western Texas through Arizona. Its range also includes Mexico.
Source: Wikipedia
Where it is found in the US
Recorded in 5 of 51 states and DC. Most records: Colorado, Arizona, New Mexico, Texas, Nebraska.
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
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_flavofascialis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-29 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-29.