During which stage is Aethina tumida most destructive to hives?

Aethina tumida, commonly known as the small hive beetle, is particularly destructive during the larval stage. At this point, the larvae emerge from the eggs and begin to feed on the brood and stored honey and pollen within the hive. Their feeding habits can lead to significant damage, including the destruction of comb and the fermentation of honey, which can negatively impact the health of the entire bee colony. The larvae cause the most harm as they burrow and feed within the comb, ultimately creating conditions that can ruin the hive's structure and resources. Recognizing this stage as the most destructive helps beekeepers understand when intervention may be necessary to protect their hives from severe damage caused by these pests.