Lesser Grain Borer. Rhyzopertha dominica (F.).

Easily identified by location of the head, which is turned down under the thorax.

This is a primary grain pest since both adults and larvae destroy whole grain kernels. Adult females lay eggs on grain. The new larvae crawl about feeding and eventually bore into the grain kernel. Inside the kernel, and larvae complete their growth and pupate. A complete generation may pass in 1 month during the summer.

Fumigation will likely be required to control infestations in grain storage areas.