Which store grain pest is commonly found in whole corn?

The Angoumois grain moth is indeed commonly found in whole corn. This pest specifically targets stored grains, and its larvae feed on whole grains like corn. Adults lay their eggs in the grains, and once the larvae hatch, they burrow into the grains, leading to significant damage and potential contamination. This behavior makes the Angoumois grain moth particularly problematic for agricultural products, especially in storage conditions favorable to their development.

The other options, while associated with grain or agricultural products, have different primary targets or behaviors. For instance, the corn earworm primarily affects corn crops in the field rather than in stored grain. The red flour beetle is more associated with processed grains and flour rather than whole grains like corn. The rice weevil, while a common pest in stored grains, specifically targets rice and other dried grain products, not whole corn directly. Hence, the Angoumois grain moth stands out as the most relevant pest for whole corn storage.