Abstract:Hawthorn spider mite (HSM), Tetranychus viennensis Zacher, is an important and damaging pest in apple orchards worldwide and has become the most serious pest on apple in north China. The hosts of this pest are mainly fruit trees of the family Rosaceae. To assess host suitability of deciduous fruit trees in family Rosaceae, a leaf disc bioassay was employed to investigate the influence of five species of deciduous fruit trees, which included apple, peach, plum, cherry, and apricot, on the development and rep...