Bug FAQYellow-spotted Webworm Moth
Anageshna primordialis · Order: Lepidoptera · Family: Crambidae
The yellow-spotted webworm moth has a wingspan of about 11 mm. Adults are active from August through November and are found in many U.S. states across the South, Midwest, and Northeast. Its host plants are unknown, so its diet has not been identified.
Source: Wikipedia
How to recognize it
Host plants are unknown.
Source: Wikipedia
Size
Wingspan is roughly 11 mm (0.43 in).
Source: Wikipedia
What it eats
The moth’s host plants have not been recorded.
Source: Wikipedia
Life cycle
Adults are on the wing from August to November.
Source: Wikipedia
When you see it
Flight period runs from August through November.
Source: Wikipedia
Where it comes from
Its range includes the same list of U.S. states as its habitat.
Source: Wikipedia
Where it is found in the US
Recorded in 38 of 51 states and DC. Most records: North Carolina, Alabama, Maryland, Texas, Georgia, Florida, Virginia, New Jersey.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; 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/Anageshna
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.