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The European Beewolves

The European Beewolves. Philanthus triangulum. Classification. Domain Eukaryote Kingdom Animalia Phylum Arthropoda Class Insecta Order Hymenoptera Family Crabronidae Subfamily Philanthinae Genus Philanthus Species P. triangulum. General info.

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The European Beewolves

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  1. The European Beewolves Philanthustriangulum

  2. Classification • Domain Eukaryote • Kingdom Animalia • Phylum Arthropoda • Class Insecta • Order Hymenoptera • Family Crabronidae • Subfamily Philanthinae • Genus Philanthus • Species P. triangulum

  3. General info The European Beewolf looks like… a wasp… that is what it is, after all. It is Ectothermic, doesn’t migrate, has internal fertilization and indirect development. Adults are herbivores, larvae are carnivorous. It provides a disservice to beekeepers by paralyzing their honeybees and taking them back to a burrow where their larvae will dine upon the honeybees. It can be found in Europe and North Africa.

  4. Special Features • Many insects spend a part of their life underground and are exposed to the risk of fungal or bacterial infections. This is the case for many digger wasp species that construct underground nests. Digger wasps hunt insects to feed their offspring. Because of the warm and humid conditions as well as the large amounts of organic material in their subterranean nest, both their food supply and their larvae are endangered by pathogens. Mold and bacterial infection are a major threat and can cause larval death in many cases. • Beewolves have evolved an elegant solution to the problem of fungal and bacterial infection. Martin Kaltenpoth and colleagues from the University of Wurzburg had already shown several years ago that beewolves form a symbiotic relationship with bacteria of the genus Streptomyces. Female beewolves cultivate these bacteria in specialized antennal gland reservoirs and apply them to the ceiling of the brood cells. Beewolf larvae later take up the bacteria and transfer the symbionts actively to their cocoons, thereby increasing their survival probability.

  5. Photos

  6. Citations • Max Planck Institute for Chemical Ecology • http://www.mpg.de/625542/pressRelease20100225 • Department of Zoology at the University of Regensburg, Germany

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