Adult rice weevils can fly. At optimum temperatures, the life cycle may take four weeks. Yellow mealworm These insects are the largest found in stored grain. They are not common pests on farms. They first infest animal feeds and then move into stored grain that is going out of condition.
Yellow mealworms prefer dark, damp places in a granary or a feed bin.
The adults live for several months and the larvae may take 1-2 years to change into pupae under harsh conditions. Because of their relatively large size, they are easily visible and often appear to be more numerous than they actually are. Their presence indicates poor storage conditions. The adults live for several months and the larvae may take 1-2 years to change into pupae under harsh conditions. Page up The insects first infest animal feeds and then move into stored grain that is going out of condition.