Bug FAQBembidion affine
Bembidion affine · Order: Coleoptera · Family: Carabidae
Bembidion affine is a tiny ground beetle measuring about 3 mm in length. It lives across North America, from parts of Canada down through the southeastern United States, and also on Cuba.
Source: Wikipedia
Size
Adults are 2.9 to 3.5 mm long (roughly 0.11 to 0.14 in).
Source: Wikipedia
Where it comes from
The species occurs in Canada (Ontario and southwestern Quebec) and the United States (from the Florida Panhandle to Texas). It is also found on the island of Cuba.
Source: Wikipedia
Where it is found in the US
Recorded in 32 of 51 states and DC. Most records: Pennsylvania, Texas, Louisiana, Maryland, Oklahoma, North Carolina, Ohio, Virginia.
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
Same family (Carabidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Bembidion_affine
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.