Background

There are over 1 million species of insects in the world. Seven-dots ladybird (Coccinella Septempunctata) is famous in China, because it preys on pests. There are about 5000 species in the ladybird family, most of them are beneficial insects. They are the natural enemy of aphids on the wheat, earthnut, and cotton. Sympetrum Croceolum belongs to dragonfly family. There are about 4000 species in the world. They only can be found in the provinces of Fujian, Guangxi, and Jiangxi. There are about 5000 species of lacewings in the world, big lacewings is a member of them. It preys on aphids. There are more than 1800 species of mantis in the world. It is very useful, it can be made into Chinese traditional medicine. Tenodera Aridifolia Sinensis can be mostly found across China. It is about 8 cm long, green in color. The four insects above are all beneficial insects.

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