Bug FAQDusky Saucrobotys Moth
Saucrobotys fumoferalis · Order: Lepidoptera · Family: Crambidae
Also called: Dusky Saucrobotys
The dusky saucrobotys moth has a wingspan of about 30 mm and was first described by George Duryea Hulst in 1886. It lives in boreal and mixed forests across North America, from Nova Scotia to British Columbia and south to Pennsylvania, Illinois and California. Its caterpillars feed on hickory (Carya) species and adults are on the wing from April through September.
Source: Wikipedia
How to recognize it
George Duryea Hulst described the species in 1886.
Source: Wikipedia
Size
The moth’s wingspan measures roughly 30 mm.
Source: Wikipedia
Where it lives
It inhabits boreal forests, mixed forests and woodlots.
Source: Wikipedia
What it eats
The larvae feed on species of the hickory genus Carya.
Source: Wikipedia
When you see it
Adults have been recorded flying between April and September.
Source: Wikipedia
Where it comes from
It is found throughout North America, from Nova Scotia west to British Columbia and north to Yukon. Its range also extends south to Pennsylvania, Illinois and California.
Source: Wikipedia
Where it is found in the US
Recorded in 24 of 51 states and DC. Most records: Montana, California, Oregon, Minnesota, Michigan, Washington, Idaho, 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 are dusky saucrobotys moths active?
Adults are on the wing from April through September.
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/Saucrobotys_fumoferalis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.