Improvement of Trap Color for Anoplophora glabripennis and Determination of the Optimus Sustained-Release Amount of Attractants

【Objective】This study aims to test trap efficiency of an improved brown color trap for baiting Anoplophora glabripennis（ Asian longhorned beetle,ALB）,this experiment was conducted in the field with sustained-releasing1-pentanol or 2-pentanol,combined with male pheromone,to develop an efficiency tool for monitoring and control ALB.【Method】Thirty-two traps（ four attractants × four releases × two color traps） were hung with nylon ropes on branches of Salix matsudana in each sample plot,and there were ninety-six traps in three sample plots. The traps were checked and recorded for the numbers of males and females captured every day. 【Result 】Trap color had a significant effect on efficiency of capturing beetles. Compared with no-modified color traps（ with which the average number of captured beetles was 1. 063）,the average number of brown modified traps captured beetles was significantly higher（ t = 4. 854,P = 0. 047）with 1. 521 individuals and the female ratio of 0. 58. When 1-pentanol or 2-pentanol was 135 mg·d-