Rice planthopper can cause field losses by iercing and sucking the phloem of rice in the rice region. Brown Planthopper, White Back Planthopper and Small Brown Planthopper are the most common species. They can be found in many provinces of China, especially in middle and lower Yangtze River and North China.

Rice planthopper, as a kind of important pest insect, has many grass hosts such as rice, wheat, barley, sorghum, sugar cane, amur foxtail, barnyard grass. Rice planthopper can spread the plant virus such as rice black strip dwarf virus, wheat rosette stunt virus, maize rough dwarf virus, etc.

Citrus psylla is the dominant pest in the period of new shoot extraction of citrus. Adults prefer to lay eggs on the tender shoots of host, and the nymphs keep piercing and sucking it from hatch to eclosion. Citrus psylla is mainly distributed in Guangdong, Guangxi, Fujian, Zhejiang, Jiangxi, Hunan, Hainan, Taiwan, Yunnan, Guizhou and Sichuan, etc.

Citrus psylla mainly damages rutaceae plant like citrus, wampee, kamuning, etc. The white honeydew secreted by the insects will result in citrus fuliginous. The adult individuals feeding on plants suffered from citrus huanglongbing can distribute the pathogen in the field, which is one of the most devastating diseases in citrus production all over the world.

Oriental fruit fly, also called small citrus fruit fly, is a worldwide quarantine pest. Oriental fruit fly does a lot of damage to guava, mango, carambola, rose apple, and pomelo. Oriental fruit fly has distributed in Guangdong, Guangxi, Hunan, Guizhou, Fujian, Hainan, Yunnan, Sichuan, Taiwan and other provinces in China.

Once suffered from the oriental fruit fly, fruits will drop out or lost nutritional and economical worth. In the regions of outbreaks, the fly can cause huge (sometimes up to 80%) yield loss.