Corn Flea Beetle

Scientific name
Chaetocnema pulicaria
Pest image (all)
Description

Corn flea beetles are small, shiny, jumping beetles that strip the upper surface from seedling corn leaves. Injury is most likely to occur on two- to four-leaf stage corn when cold temperatures slow growth.

Source of information
J.P. Michaud (http://entomology.k-state.edu/extension/insect-information/crop-pests/corn/fleabeetle.html)
Pest photo source
http://entomology.k-state.edu/extension/insect-information/crop-pests/corn/