Calosoma semilaeve
Calosoma semilaeve, the black calosoma or semi-smooth beautiful black searcher, is a species of ground beetle in the subfamily Carabinae. It was described by John Lawrence LeConte in 1851. This species is found in Mexico and the United States, where it inhabits cultivated fields and road sides.

Yves Bousquet · CC BY 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- CalosomaPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At most 196 thousand years on record.
The one occurrence read is dated to somewhere between 210 ka and 14 ka, which is a dating window rather than a span.
1 occurrence of Calosoma semilaeve on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
1 occurrences- Pleistocene100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Calosoma semilaeve and its relatives
PleistoceneWhere Calosoma semilaeve and its relatives were recorded in the Pleistocene.
Found in the same rock
32 taxa- Accipiter cooperii1 site
- Aenocyon dirus1 site
- Amara insignis1 site
- Aphelocoma1 site
- Astur atricapillus1 site
- Canis latrans1 site
- Canis lupus1 site
- Canis occidentalis furlongi1 site
- Canis ochropus orcutti1 site
- Charadrius vociferus1 site
- Coniontis abdominalis1 site
- Coniontis elliptica1 site
- Coniontis puncticollis1 site
- Coniontis robusta1 site
- Dytiscus marginicollis1 site
- Eleodes (Cratidus) osculans1 site
- Eleodes (Eleodes) acuticauda1 site
- Eleodes (Eleodes) grandicollis1 site
- Hiltonius australis1 site
- Limnodromus griseus1 site
- Megascops asio1 site
- Melanerpes lewis1 site
- Meleagris californica1 site
- Numenius americanus1 site
The Paleobiology Database records 1 site for Calosoma semilaeve, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
1 referenceEach of the 1 occurrence read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Calosoma semilaeve
- Source
- Wikipedia/Commons
- Credit
- Yves Bousquet
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
No 3D scan of Calosoma semilaeve was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCalosoma through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. LeConte 1852