Bug FAQAmerican Crudely Carved Wrinkle Beetle
Omoglymmius americanus · Order: Coleoptera · Family: Carabidae
These beetles are about 8 mm long and have a reddish-brown, elongated body. They live in fungus-infested trees in eastern North America.
Source: Wikipedia
How to recognize it
The pronotum shows three distinct grooves, and the elytra are marked with many line-like indentations.
Source: Wikipedia
Size
Adults measure roughly 8 mm (0.31 in) from head to tip of the abdomen.
Source: Wikipedia
Where it lives
They are found in trees that are rotting or heavily colonized by fungi.
Source: Wikipedia
Where it comes from
The species is native to the eastern part of North America.
Source: Wikipedia
Where it is found in the US
Recorded in 16 of 51 states and DC. Most records: Ohio, Kansas, Virginia, South Carolina, Maryland, Texas, North Carolina, Kentucky.
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/Omoglymmius_americanus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.