The Evolution and Diversity of Beetles

The evolutionary lineages of all modern beetle species and Coleoptera were established by the Jurassic period in the middle of the Mesozoic Era at least 145 million years ago.

Darkling Beetles
Adaptations such as the protective subelytral cavity of darkling beetles have enabled many species to survive in some of the most extreme deserts.
Photo by Shutterstock/Karel Gallas