''Plinthocoelium cobaltinum'' is a species of

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

in the family Cerambycidae. It was described by

John Lawrence LeConte John Lawrence LeConte (May 13, 1825 – November 15, 1883) was an American entomologist of the 19th century, responsible for naming and describing approximately half of the insect taxa known in the United States during his lifetime,

in 1873.Bezark, Larry G
''A Photographic Catalog of the Cerambycidae of the World''
. Retrieved 22 May 2012.

References

Callichromatini Beetles described in 1873 Taxa named by John Lawrence LeConte {{Callichromatini-stub