In recent years, the United States has faced an alarming threat from the invasive and deadly hornet, also known as the Asian giant hornet (Vespa mandarinia) or “killer hornet.” First spotted in 2019 and last seen in Washington state in 2021, this aggressive insect has spread fear due to its capacity to decimate bee populations and pose risks to humans.
Killer hornets are native to East Asia and are among the world’s largest hornets, growing up to 2 inches (5 cm) in length. Their distinctive yellow and black bodies, large mandibles, and aggressive nature make them formidable. They build large nests and can sting repeatedly, with venom that causes severe pain and allergic reactions. While fatalities are rare, the hornet’s ability to destroy entire bee hives threatens agriculture and ecosystems.
Although the killer hornet is dangerous, mosquitoes remain the world’s most deadly insect. Tiny but lethal, mosquitoes transmit diseases like malaria, dengue fever, Zika, and West Nile virus, causing significant health risks and fatalities globally. A single bite from an infected mosquito can transfer pathogens into a person’s bloodstream, spreading life-threatening diseases.
The emergence of the killer hornet and the enduring danger of mosquitoes highlight the constant threats nature can pose to humans and ecosystems alike.