Watch out for the outbreaks of desert locusts.
There are about 55 species of locusts belonging to the genus Schistocerca, distributed in Africa, South and North America, and Asia. The desert locust S. gregaria is one of the world's most serious agricultural pests, it alone can invade a total area of 28 million square kilometers, 20% of the world's land surface, which includes whole or parts of 65 countries occupied by one-tenth of the world's population. There are two records of desert locusts in China, one is from Yunnan, and another from Xizang (Tibet). Desert locusts migrate from the outbreak centre to the borders between India, Nepal and even invading Burma. These places adjoin the southern part of Xizang and western part of Yunnan, China. Desert locusts (gregarious or solitarious phase) may migrate through these paths to the southwestern part of China. All Chinese frontier stations and organizations responsible for agricultural plant protection should be vigilant for outbreaks of desert locusts.