they have no particular name,they are called non harmful insects
That would be called biological control of insects.
This would be an example of Batesien mimicry as opposed to Mullarian mimicry.
Nice
medicine
Please try rewriting your question. Are you asking why soap is harmful to insects? Or are you asking why soap isn't harmful to insects?
Bedbugs and fleas are harmful because they are insects.
Because insects bite and are sometimes harmful to Humans!
Insects are harmful to crops because they can be carrying dirty kinds of bacteria, and they can cause diseases in plants and kill plants.
They do not
In many areas, grasshoppers are considered harmful insects. They have the ability to devastate large areas of crops and other important plants.
Some benefits of insects are: pollination of plants by some insects, some beneficial insects eat other, harmful insects.
Harmful insects are insects that are harmful in any way to plants, animals or humans. There are many ways in which insects can be harmful to the above; insects such as locusts can form huge swarms that can destroy whole crops in minutes. Other insects can pierce a leaf or stem of a plant and suck out its juices, leaving the plant to wither and die. Various types of insect carry diseases such as malaria and encephalitis which leave many children in developing countries orphaned and many parents childless.