Trilobite is a primitive wingless insect, which belongs to the order Celosiformes, Acaricidae. At present, there are about 250 species known in the world, and there are more than 20 species known in China. It is not only a dry moth stored indoors, but also an important pest of archives, books and cultural relics in libraries all over the world. In China, the common species in libraries are cardigan fish, Taiwan Province cardigan fish and domestic cardigan fish.

Generally, this insect has 1 generation every year, and it only takes 3 months for each generation under suitable temperature conditions. After mating, adults can lay eggs, and the eggs are scattered in the gaps of cardboard, books and documents. Each female turtle lays 6 to 10 eggs.

Eggs hatch after 35 ~ 40 days, and nymphs can feed on eggs. I like dark and damp, hiding in the cracks of my master during the day and coming out at night. Sexual life should be active and flexible. You can see it in a warm room all year round. The temperature below 4℃ does not move. Adults have strong hunger tolerance and can survive for 300 ~ 3 19 days without food. The suitable temperature for growth and development is 22 ~ 28℃ and 75 ~ 95%.

Extended data:

Because of its omnivorous diet, many hidden places and fast action, it is difficult to prevent and control sweater fish. We should mainly focus on the following points:

(1) Strengthen the environmental sanitation inside and outside the warehouse, clean up rotten and damp articles, clean up the surface that is not often exposed, reduce the places and number of woolen sweaters laying eggs, and reduce the number of insect mouths.

(2) Control the temperature and humidity in the warehouse. The suitable temperature for the development of cardigan fish is 22 ~ 28℃ and the humidity is 75 ~ 95%. Therefore, it is best to avoid the optimum temperature and humidity for the development of hairy fish in the warehouse.

(3) Sprinkle some powdery pesticides, such as thyme, around the doors and windows of the warehouse and around the legs of the filing cabinet. Liquid pesticides can also be used. This can cut off the activities and access routes of hairy fish and reduce its harm range and scope.

(4) If necessary, put some insect repellent. There are many drugs on the market, but they are also mixed, so we should choose products from reliable manufacturers.

(5) When large-scale hazards occur, in addition to file disinfection, empty warehouses should also be disinfected, which can be operated by experienced professionals.