"The hornets can devastate a colony of honey bees: a single hornet can kill as many as 40 honey bees per minute thanks to their large mandibles which can quickly strike and decapitate a bee"
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Another curious thing on Vespa mandarinia "The toxicity of Vespa mandarinia venom is actually somewhat lower than that of honeybee (Apis mellifera) venom. The median lethal dose (LD50), a dose at which 50% of subjects will die, is 4.1 mg venom per kg body weight (injected in vitro in mice) for Vespa mandarinia and 2.8 mg/kg for honeybee venom. Whereas the honeybee is more toxic, the much larger hornet usually injects a greater quantity of venom, so a hornet sting may be in fact a bit more dangerous. But given the fact, that humans will usually survive several dozen or even hundreds of bee stings without lasting consequences, it becomes evident that claims like "three hornet stings will kill a man" are nonsense. No healthy man dies from only three Vespa mandarinia stings!"