DESCRIPTION: The Comal Springs riffle beetle is an aquatic, surface-dwelling species of about two millimeters in length, with females slightly larger than males. It is reddish brown in color and has ...

"Among dung beetles, for instance ... At least in theory, the combined forces of natural selection (getting killed by predators or disease) and sexual selection (getting killed by rivals or ...

Diving beetles (Dytiscidae) maintain the balance of pond ecosystems. They feed on other aquatic organisms, such as mosquito ...

Two of the 80,000 beetles that Wallace collected in his travels round ... and it has usually been his name alone associated with the theory of evolution by natural selection. Wallace expressed no ...

DESCRIPTION: At about one to 1.5 inches in length, the American burying beetle is the largest species of its genus in North America. Its body is shiny black, with hardened protective wing covers ...