Utah State University Extension
Brown marmorated stink bug (Order Hemiptera: Family Pentatomidae) (BMSB) was accidentally introduced into the eastern U.S. from Asia in the late 1990s. In 2001 it was officially identified in Pennsylvania, and has since spread along the eastern seaboard and westward into the Great Lakes region.
Petrizzo, Erin and Alston, Diane G., "Brown Marmorated Stink Bug" (2011). All Current Publications. Paper 865.