European Beewolf

Fascinating facts about the European Beewolf

• The European beewolf is the only member of its genus that focuses exclusively on western honey bees, earning its reputation as a true bee-killer. While other Philanthus species take a variety of bees, P. triangulum repeatedly hunts Apis mellifera for its offspring. After paralysing a bee, the female deposits it together with an egg in a small underground chamber. Each brood cell receives between one and five of these immobilised bees to feed the developing larva.
• When a female beewolf attacks, she drives her stinger through the thin articular membrane located just behind the bee's front legs, causing immediate paralysis. The immobilised honey bee is then grasped between the wasp's legs and carried back to the nest in flight. Upon arrival she often hovers over the burrow entrance before slowly descending into the tunnel. This precise handling ensures the prey remains fresh for the larva awaiting inside.
• Beewolf nesting sites can develop into huge aggregations, sometimes containing as many as 15 000 individual burrows clustered together. Each female digs a tunnel that may reach a metre in depth and then creates between three and 34 short side tunnels at its end, each side tunnel housing a separate brood cell. The displaced soil is flicked behind the wasp as she excavates, keeping the entrance clear.
• After the mother seals a brood cell, the egg emits a concentrated puff of nitric oxide that sterilises the immobilised honey bees by killing any actively growing fungi. This chemical burst is one of several anti-pathogen tactics the female employs to keep the larva safe. By eliminating mould spores the beewolf dramatically reduces the chance that fungal infection will kill the developing offspring, improving survival rates in the humid brood environment.
• Male European beewolves establish tiny scent-marked territories of about a quarter of a square metre in vegetation close to the females' nesting aggregations. These plots contain no food or nesting resources; instead they are defended with a pheromone from the male's cephalic glands and the defence is non-physical.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the European Beewolf

In the warm, sun-baked landscapes of Europe, the European Beewolf dances through the air with a mesmerizing blend of purpose and agility, its iridescent body glimmering like polished onyx as it pursues its prey with relentless dedication. With a flight as swift as a summer breeze, this formidable hunter navigates the intricate web of life with precision, seeking out the unsuspecting honey bees that will become the sustenance for its young. As it burrows into the earth, the European Beewolf creates a labyrinthine world of tunnels and chambers, a testament to its remarkable engineering prowess and a reflection of its status as a master architect of the insect realm.

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