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15 Most Dangerous Insects in the World


Many people hate insects because they find them repulsive, or because they are a nuisance when these pests enter their homes. However, some insects are not simply ugly or annoying: they can be dangerous, and even deadly.

Here are 15 of the most dangerous insects around the world.

1. Mosquitoes

Mosquitoes are a nuisance, and their bite can be pretty painful. But mosquitoes are also deadly insects, as they transmit diseases such as malaria, yellow fever and encephalitis to the humans they bite.

It’s estimated that every 30 seconds, a child dies due to malaria that could have been transmitted by a mosquito bite. The mosquito is a small but mighty creature known as one of the most dangerous insects in the world.

2. Giant Japanese hornets

Giant Japanese hornets are the largest hornets around the world, as they can grow up to 2 inches long. The most dangerous insects in the world are extremely aggressive, and they feed on honey bees larvae.

The sting of giant Japanase hornets attacks the nervous systems of their victims, and can lead to death.

3. Tsetse flies

Tsetse flies are native to Africa. These large flies inject a toxin that causes a dangerous disease known as human sleeping sickness.

When this disease is not treated properly, it leads to lymphatic infection which will eventually spread to the blood of the victim, damage their nervous system and brain, and lead to death.

4. Driver ants

Driver ants are found in Central and East Africa. They live in colonies of up to 22 million ants, and they can easily climb trees and hills in search of preys.

Driver ants can attack and kill other insects, birds, mammals of all sizes, and human beings.

5. Killer bees

Based on the name alone, you would have guessed the killer bees are one of the most dangerous insects in the world. Killer bees, also known as Africanized honey bees, are hybrid bees that have a very aggressive behaviour. They follow their victims for more than a mile, and they target the face and eyes of the humans they attack.

The toxin they inject is not that dangerous, but since they attack in groups, they can cause nausea, dizziness, vomiting, and fainting.

6. Fire ants

Fire ants, also called red ants, can easily kill small animals with their poisonous venom. There are more than 200 species of fire ants around the world.

If a human being disturbs fire ants, they will attack in groups, and their bite can cause a burning sensation, allergic reactions, or death. These ants are among the most dangerous insects in the world.

7. Kissing bugs

Kissing bugs are bugs that feed by sucking the blood of animals and humans. They are mostly found in the United States.

They are called kissing bugs because they often bite humans near their mouth when they are sleeping. Their bite can cause allergic reactions, and they can transmit a parasite that causes Chagas disease.

8. Bullet ants

Bullet ants are the largest ants in the world. They are mostly found in Nicaragua and Paraguay, and they like to make their nests at the base of large trees.

Bullet ants are named this way because their bite is as painful as being shot by a bullet, and the intense pain can last for up to 24 hours.

9. Fleas

Fleas are tiny parasites that suck blood from animals and human beings. There are more than 2000 species of fleas around the world.

On top of being a nuisance that causes itchy bumps with their bite, they can cause infection and transmit different diseases.

10. Bot flies

The larvae of bot flies are internal parasites that develop underneath the skin of mammals and human beings. Bot flies are mostly found in Central and South America.

The female bot fly will lay her eggs within the skin of the chosen host. The larvae will develop inside the body, and leave it once it’s fully developed.

11. German yellowjackets

German yellowjackets are native from Europe, and are now found throughout North America. These aggressive wasps will defend their nests against animals and humans, and will pursue them over a long distance to attack them.

Their sting is very painful, and can cause severe allergic reactions.

12. Deer ticks

Deer ticks are dangerous because they can infect humans with Lyme disease with their bite. Lyme disease causes headaches, stiff and painful joints, and heart problems. Thousands of people are infected by deer ticks each year.

13. Cockroaches

Cockroaches are difficult to get rid of when they decide to invade a home. They rarely bite people, and when they do, it’s because they are hungry. However, they always leave a trail of bacteria behind them, which can cause allergies and transmit diseases.

14. Lice

Lice are parasites, and there are different types of them that can infest human beings, including head lice, body lice and pubic lice. Their itchy bites can occasionally cause dangerous illnesses.

15. Bed bugs

Bed bugs, who like to feed on human blood while they sleep at night, are not life threatening. However, they can cause psychological damage, as many people are afraid of going to bed because of these bugs.