This order is usually called booklice, because some species often live in books, and some live in grains. They are more commonly found among plants, under the bark of trees, on lichens and on old wood.
[Identification points] Body length 1-10 mm. They are weak and come in long-winged, short-winged, small-winged or wingless varieties. There are fewer wingless species. The head is large, and the posterior lip base is very developed and bulging in a spherical shape. Chewing mouthparts. The forewings are large and often have markings and wing moles. When resting, the wings are often roof-shaped or placed flat on the back of the body. The abdomen has 10 segments and no tail whiskers.
[Species and Distribution] There are more than 4,660 known species in the world, distributed in major animal areas around the world, especially in tropical, subtropical and temperate forest areas. 585 species have been recorded in my country.
The characteristics of this order can be summarized as follows: book lice, tree lice, rodents, protruding lip base and no tail barbels; forewings have nevus veins like waves, and the wing shape is variable and a few have none.
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