Final answer:
Mites are known to be parasitic to a wide range of insect larvae in stored products. The pests in the question, such as grain moths, rice weevils, and sawtooth beetles, have distinctive interactions with parasites or parasitoids.
Step-by-step explanation:
Mites are parasitic to the larvae of many stored product pests. However, the pests mentioned in the question like grain moths, rice weevils, and sawtooth beetles each have a different set of interactions with parasites or parasitoids. Grain moths can serve as host to various parasitoids. Rice weevils themselves are seed predators that directly impact the survival of seeds as they drill through the wall of a fruit and deposit an egg that consumes the seed contents and emerges as an adult, this process kills the seed but is not necessarily a parasitic interaction, it's rather a predator-prey relationship.
On the other hand, sawtooth beetles are known to be pests of stored products and may have parasitic interactions, but generally, mites typically target a broader spectrum of insects and not specifically these beetles. Parasitoid relationships are common in insects, where an organism such as the fungus Entomophaga maimaiga or parasitoid wasps lay their propagules (such as eggs) upon or within a host, leading to the host's demise as the parasitoid's lifecycle progresses. This contrasts with the pure parasitic interaction that does not necessarily result in host death. Examples of such interactions include the Cordyceps fungus on moths and parasitoid wasps on caterpillars.