A Pheromone Trapping Program for the Brown Marmorated Stinkbug ( Halyomorpha halys ) Begins in Los Angeles County, California Brown marmorated stinkbug (BMSB) , Halyomorpha halys (Hemitpera: Pentatomidae) , is an invasive insect pest native to China, Japan, Korea, and Taiwan. It was first discovered and officially documented on the east coast of the USA...