Integrated pest management (IPM) for the CLB should begin with positive pest identification and field scouting to determine infestation rates. Cultural management methods and the use of biological control agents are possible ways to minimize the use of insecticides.
Distribution of the CLB
The CLB is native to Europe and Asia. The first official record of the CLB in the United States is from southwestern Michigan in 1962 (Castro and Guyer 1963). The insect is now widespread across the eastern and Midwestern states and into Canada. The CLB was first found in Washington State in 1999. As of 2011, the CLB now infests 19 Washington counties (Figure 1). (Consult the National Agricultural Pest Information System (NAPIS) website for up-to-date distribution maps at http://pest.ceris.purdue.edu/index.php.)