Bug FAQPecan Leaf Casebearer Moth
Acrobasis juglandis · Order: Lepidoptera · Family: Pyralidae
Source: Wikipedia
The adult moth has a wingspan of about 18 mm. It lives across a broad swath of North America, from Ontario down to Florida and west to New Mexico. Its larvae eat the leaves of hickory and several walnut species.
Source: Wikipedia
Size
The wingspan measures roughly 18 mm.
Source: Wikipedia
What it eats
The caterpillars feed on hickory and several walnut trees, including black walnut.
Source: Wikipedia
Where it is found in the US
Recorded in 15 of 51 states and DC. Most records: Mississippi, New York, Michigan, Ohio, New Jersey, North Carolina, Pennsylvania, Massachusetts.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What trees do the larvae feed on?
The larvae eat the leaves of hickory and walnut species such as black walnut.
Source: Wikipedia
Where is this moth found?
It occurs from Ontario down through the eastern United States to Florida and west to New Mexico.
Source: Wikipedia
Same family (Pyralidae)
Indian-Meal MothPlodia interpunctellaCan damage your home
Greater Wax MothGalleria mellonella
Mediterranean Flour MothEphestia kuehniellaCan damage your home
Meal mothPyralis farinalisDamages trees, gardens or crops
Bee MothAphomia sociellaNuisance, not dangerous
Yellow-fringed Dolichomia MothHypsopygia olinalisSources
- Wikipedia: https://en.wikipedia.org/wiki/Acrobasis_juglandis
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.