Bug FAQCalosoma discors
Calosoma discors · Order: Coleoptera · Family: Carabidae
Adults of Calosoma discors have reduced wings and cannot fly well. They are known as the beautiful black searcher. The species lives in coastal grasslands and oak savannahs of the Sierra Nevada foothills in California and Washington.
Source: Wikipedia
How to recognize it
Calosoma discors is called the beautiful black searcher.
Source: Wikipedia
Size
Adults are brachypterous, meaning they have short wings.
Source: Wikipedia
Where it comes from
The species is found in California and Washington.
Source: Wikipedia
Where it is found in the US
Recorded in 2 of 51 states and DC. Most records: California, Pennsylvania.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Same family (Carabidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Calosoma_discors
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.