Which pests are known as stored product pests whose larvae feed from inside the grain?

• A. Granary weevil
• B. Cowpea weevil
• C. Rice weevil
• D. Granary, cowpea and rice weevils

Answer: (D)

Stored-product pests include species whose larvae develop inside seeds or kernels, feeding from within rather than on the surface. The granary weevil bores into cereal grains like wheat and develops entirely inside the kernel, so the damage is internal. The cowpea weevil targets stored legumes such as cowpeas, with eggs laid in seeds and larvae feeding inside the seed. The rice weevil also attacks stored cereals, with larvae that develop inside rice kernels. Because each of these three pests has larvae that feed from inside the grain, the group that includes granary weevil, cowpea weevil, and rice weevil best fits the description.