Bug FAQCalosoma tepidum
Calosoma tepidum · Order: Coleoptera · Family: Carabidae
Calosoma tepidum is a ground beetle in the subfamily Carabinae, known as the lukewarm beautiful black searcher. It lives in open, dry ground with sparse low vegetation across many western U.S. states and British Columbia. Adult beetles hunt and eat caterpillars and grasshoppers.
Source: Wikipedia
How to recognize it
Calosoma tepidum is called the lukewarm beautiful black searcher and belongs to the ground beetle subfamily Carabinae.
Source: Wikipedia
What it eats
Adults prey on caterpillars and grasshoppers.
Source: Wikipedia
Where it is found in the US
Recorded in 9 of 51 states and DC. Most records: Utah, Washington, Oregon, Colorado, Idaho, California, Wyoming, Montana.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What does Calosoma tepidum eat?
Adult beetles feed on caterpillars and grasshoppers.
Source: Wikipedia
Same family (Carabidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Calosoma_tepidum
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-29 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-29.