Prediction and analysis of potential distribution of Holcocerus hippophaecolus in China

Holcocerus hippophaecolus is the most serious boring pest of seabuckthorn plantations in recent years in China.The CLIMEX model was used to predict the potential distribution of this pest.The results show that the potential distribution of this pest covers the southern and central parts of Gansu Province, southern Ningxia Hui Autonomous Region, northern Shaanxi and Shanxi Province, northern Hebei Province, northern Beijing.As well, some aeras of northern and eastern Liaoning Province, southern Inner Mongolia Autonomous Region, some aeras of western Sichuan Provinces and some parts of eastern Qinghai Provinces and some parts of northern Xingjiang Uyghur Autonomous Region are affected.These areas have the largest distribution of seabuckthorn plantations in China.Based on the natural distribution and growth history of seabuckthorn with infested trees, as well as EI values from CLIMEX, we conclude that H.hippophaecolus is a native pest in "Tree North" China, and the outbreak of the pest population is a typical example that native pests damage introduced trees.