Bee beetle

The bee beetle (Trichodes alvearius) is a member of the order Coleoptera and the family Cleridae. While often found on flowers feeding on pollen or smaller insects, this species is notorious among beekeepers as a potential intruder in honey bee hives and wasp nests.

The primary concern regarding this beetle lies in the behavior of its larvae. These larvae are parasitic and develop within the nests of bees. They actively search for brood chambers, where they consume bee larvae and pupae, effectively reducing the worker bee population and weakening the entire colony.

Regarding their biology, adult beetles are commonly seen during the summer on flowering plants, particularly Apiaceae. After mating, females search for suitable egg-laying sites, often entering hives. The life cycle involves several larval instars, pupation, and finally, the emergence of the adult beetle.

Damage caused by Trichodes alvearius is characterized by the destruction of wax cells and the consumption of food stores such as pollen and honey. Beyond the direct loss of brood, the presence of these beetles can cause distress to the bee colony, leading to reduced honey yields and general stress.

To protect apiaries, it is essential to maintain strong, healthy bee colonies that can defend themselves. Practical management includes the regular inspection of hives, the removal of debris, and the prompt replacement of old or damaged honeycomb frames where larvae might seek shelter.