Corn Rootworm Beetles (genus Diabrotica)–of which there are three prominent species–are a highly destructive and pervasive insect pest of corn in the U.S.  The Western Corn Rootworm (D. virgifera virgifera) and the Northern Corn Rootworm (D. barberi) are the most devastating rootworm species in corn-growing states like Iowa and the more northern states that grow