Killer Hornets: A Threat to Bees in the United States

Hornets are most destructive in late summer and early fall, as they attack honey bee hives, killing adult bees and devouring bee larvae and pupae. The largest "killer" hornets in the world, which can reach up to 5 centimeters in length and are known for their insatiable appetite for honey-producing bees, have been found in the state of Washington. These hornets are called "killer" because their sting can take the life of humans. The hornets were first spotted in the United States at the end of December, but it is unknown when they first arrived in North America.