Bug FAQAttagenus brunneus
Attagenus brunneus · Order: Coleoptera · Family: Dermestidae
Source: Wikipedia
Adults measure about 3 to 5 mm in length. It is found in North America and Europe. In Europe it lives inside buildings as an invasive detritovorous species.
Source: Wikipedia
Size
Adults are about 3 to 5 mm long.
Source: Wikipedia
Is it a pest in the house?
It is considered a household pest in European buildings.
Source: Wikipedia
Where it lives
In Europe it lives inside buildings as an invasive detritovorous species.
Source: Wikipedia
What it eats
It feeds on detritus.
Source: Wikipedia
Where it is found in the US
Recorded in 28 of 51 states and DC. Most records: Kentucky, Ohio, New York, Michigan, Illinois, Massachusetts, Pennsylvania, Colorado.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: introduced in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
Is Attagenus brunneus a household pest?
It is considered a household pest in European buildings.
Source: Wikipedia
Same family (Dermestidae)
Varied Carpet BeetleAnthrenus verbasciCan damage your home
Larder BeetleDermestes lardariusCan damage your home
Buffalo carpet beetleAnthrenus scrophulariaeCan damage your home
Black Carpet BeetleAttagenus unicolorCan damage your home
Hide BeetleDermestes maculatusCan damage your home
Furniture Carpet BeetleAnthrenus flavipesCan damage your homeSources
- Wikipedia: https://en.wikipedia.org/wiki/Attagenus_brunneus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.