The Harm and Risk Assessment of the Urban Invasive Pest Corythucha ciliata in Sichuan Province

Corythucha ciliata is a dangerous invasive pest in forestry, mainly infesting Plantanus spp.. In recent years, the infestion of C. ciliata has become more serious on Platanus spp. trees in Sichuan. In order to prevent the pest effectively, an investigation was conducted to find out the occurrence regularity of C. ciliata in Chengdu, Nanchong, Guang'an, Luzhou and Yibin from June 2018 to May 2019. Through the method of pest risk analysis, the qualitative and quantitative analysis was made of the risk of C. ciliata. The results showed that the risk value (R)of C. ciliata was 1.60, indicating that C. ciliata belonged to moderately dangerous forest pest in Sichuan.