Brown marmorated stink bug (BMSB), Halyomorpha halys (Hemiptera: Pentatomidae), is an invasive pest from eastern Asia. This species was first confirmed in the United States in 1998 near Allentown, Pennsylvania. It is believed individuals were accidentally introduced with packing crates from China or Japan. Since 1998, BMSB has rapidly spread to 41 states and the District of Columbia (Leskey et al. 2014). Live adults were first detected in Scott County, Iowa in 2012 and have now been confirmed in eight counties as of 2014.