What are the harmful insects and the diseases they cause

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Identification of harmful insects.

Harmful insects are defined as types of insects that cause harm to humans, agricultural crops or livestock, directly or indirectly, and usually harm an organism by stinging it, sucking it, damaging its tissues, or transmitting diseases to it.

Some poisonous insects are very harmful and require medical intervention. It should be noted that some types of insects are harmful only at a specific stage of their life cycle, while others are harmful in all stages of their life.

Harmful insects that threaten human health

Insects play an undeniably important environmental role, but among all the species that number about one million species, there are 5,000 species that are classified as very dangerous species. Examples of diseases or viruses that these species cause and transmit to humans include the following:

Malaria is transmitted by a species of mosquito called Anopheles mosquitoes, and approximately 2.5 million people are infected with the disease each year.
Arbovirus This virus is produced by mosquitoes and causes yellow fever, encephalitis, and other diseases.
Plague disease is also called the black disease, and fleas and rodents contribute to its transmission to humans, and this disease has several types that infect about 5,000 people annually.
Intestinal diseases House flies transmit bacteria that cause this type of disease, including typhoid fever, cholera, and shigella.
Lyme disease is caused by bacteria called Borrelia burgdorferi entering the bloodstream when bitten by a spider or a black-legged tick.
Sleeping sickness is transmitted by a fly called the tsetse fly, and it results in the death of large numbers of people and their livestock in Africa.

Harmful insects that threaten the safety of agricultural crops

The harmful insects that threaten the safety of agricultural crops are divided into two main types, as follows:

Insects feeding on the same crop

Insects that feed on crops vary, some of which are in the larval stage, and some of them feed on them at puberty, and some of these insects attack part or parts of the plant; Such as stems, leaves, fruits, or even roots. Examples of these insects are the following:

bed larvae.
Moth larvae.
Manna.

Insects that cause diseases and infection of crops

Some insects cause direct damage to crops, while others do not cause it at all, so that their negative impact on crops is indirect, through the transmission of viral or bacterial infection, for example, viral diseases caused by aphids that appear on potatoes during their movement between plants. the crop.

The most dangerous insects in the world

Harmful insects are classified into two types, some of them cause pain and some of them can kill a person with a single sting, and some insects are not fatal if they are alone, but they are so when they are in groups, and among the most dangerous insects in the world are the following:

Cow killer ant

Cow killer ant

This ant sends signals to bring the entire colony to attack, and its saliva is a deadly poison, and it may affect the immune system of the infected.

red fire ants

red fire ants

This type of ants works in groups to harm humans and crops, targeting and killing humans, and destroying agricultural crops that they encounter as well, and nothing can stop these ants when they are in a community.

Burning beetles (Blister beetles)

Burning beetles (Blister beetles)

These beetles secrete cantharidin, a compound that destroys the lining of the digestive tract when ingested. It also results in dermatitis, and may cause death.

Asian giant hornet

Asian giant hornet

This species is characterized by its remarkable aggressiveness and its extremely painful bite, which results in more poison than the bite of any other insect, and causes death.

widow spider

widow spider

The venom of this spider targets the human nervous system, causing pain for long periods that extend for months, and many complications may appear to the injured later.

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