There are many black bugs on the dormitory wall, please identify them!

According to the information you provided, the black bug on the wall may be a moth. éRui family, also known as Mothidae and Chaetomidae, commonly known as moths and flies. It is a miniature hairy or scaly Diptera insect, including blood-sucking sandflies and common indoor moths.

This little black bug is produced because the room is damp and moldy, and its specific function seems to be the breeding of mold, which is difficult to eradicate. The most wasteful thing is the overall decoration and painting of the wall.

If you want to completely eliminate these little black bugs, you can try the following methods:

1. Use pesticides. Avoid food and drinking water sources when spraying pesticides, preferably when leaving the room.

2. Clean the room regularly. Most of the larvae of black bugs live in the habitat of aquatic organisms, so cleaning toilets regularly, especially bathtubs and washbasins, can effectively reduce the number of black bugs.

3. Keep the room dry. Wet rooms are one of the main reasons for breeding black bugs. Using dehumidifier and good ventilation can effectively reduce indoor humidity.

4. Repair the water leak. If there is water leakage, timely repair can effectively reduce the number of black bugs.

If you are worried about the influence of black bugs on your health, you can consult a doctor or a professional.