This makes the invading hornets more of a threat to them. ![]() Bees living outside of the murder hornet's natural range, such as North American native yellow bumblebees ( Bombus fervidus) and European honeybees ( Apis mellifera) - which aren't native to North America but help pollinate crops, didn't evolve alongside the fierce giant hornets and don't have strategies to defend themselves against murder hornet attacks. They then vibrate their bodies together to heat up the ball until it is about 116 degrees Fahrenheit (47 degrees Celsius), which is hot enough to kill the hornet inside but not too hot to kill the bees, Live Science previously reported (opens in new tab). The bees swarm an invading hornet in unison and trap it in a tight ball of their combined bodies. Honeybees’ stings can’t penetrate hornets’ thick outer skin, but Japanese honeybees ( Apis cerana japonica) have a strategy to defend their colonies against these devastating hornet attacks. Size: Up to 2 inches (5.1 centimeters) long
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