Adventive populations of Trissolcus japonicus, an Asian natural enemy of Halyomorpha halys, in the USA Angelita L. Acebes, Virginia Polytechnic Institute and State University ; Elizabeth H. Beers, Washington State University ; Christopher Bergh, Virginia Polytechnic Institute and State University ; Marie-Claude Bon, USDA - ARS ; Matthew L. Buffington, USDA - ARS ; Mary Cornelius, USDA - ARS ; Christine Dieckhoff, USDA - ARS ; Elizabeth L. Fread, Virginia Polytechnic Institute and State University ; Matthew Greenstone, USDA - ARS ; Megan Herlihy, USDA - ARS ; Vincent Lesieur, USDA - ARS ; Tracy C. Leskey, USDA - ARS ; Ludovic Manaargadoo, USDA-ARS ; Joshua Milnes, Washington State University ; William R. Morrison, USDA - ARS ; Paula M. Shrewsbury, University of Maryland ; Elijah Talamas, USDA - ARS ; Kathy Tatman, USDA - ARS ; Rebeccah A. Waterworth, University of Maryland ; Donald C. Weber, USDA-ARS ; Nik G. Wiman, Oregon State University ; Kim A. Hoelmer, USDA - ARS