Northern Corn Rootworm
the northern corn rootworm is the most common species found on corn. While adult Diabrotica barberi can feed on a variety of plants, their larvae survive [...] only bear a few kernels. Larval feeding disrupts root system function, reducing the amount of water and nutrients available to developing corn plants, affecting [...] roots. Certain populations of this species have evolved a resistance to crop rotation through prolonged diapause; the eggs of “semivoltine” Diabrotica barberi