Detailed distribution of Halyomorpha halys in the USA
Halyomorpha halys (Heteroptera: Pentatomidae – EPPO Alert List) is a highly polyphagous pest of Asian origin which was recently introduced into the USA and Europe (Switzerland in 2007; see EPPO RS 2008/200). In the USA, it was first discovered in 2001 in Pennsylvania and it rapidly spread to other states. According to a recent US datasheet, H. halys is now reported from the following states: Connecticut*, Delaware, Idaho*, Indiana*, Illinois*, Iowa*, Maine, Maryland, Minnesota*, Mississippi*, Montana*, New Jersey, New York, Nevada*, Ohio, Oregon, Pennsylvania, South Dakota*, Tennessee*, Utah*, Virginia, Washington*, West Virginia, Wisconsin*, and Wyoming*. H. halys is reported as intercepted only in California and Florida.
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* New state records are marked with an asterisk.
Sources
Gyelshen J, Bernon G, Hodges (2009) Halyomorpha halys. Featured Creatures. University of Florida Institute of Food and Agricultural Sciences and Florida Department of Agriculture and Consumer Services, USA. http://entomology.ifas.ufl.edu/creatures/veg/bean/brown_marmorated_stink_bug.htm