1. Department of Plant Pathology, Physiology, and Weed Science Virginia Tech Blacksburg Virginia 24061 USA
2. CONICET CENAC‐APN Fagnano 244 Bariloche Argentina
3. Grupo de Ecología de Poblaciones de Insectos (GEPI) INTA‐CONICET Modesta Victoria 4450 Bariloche Argentina
4. Department of Bioagricultural Sciences and Pest Management and Graduate Degree Program in Ecology Colorado State University 1177 Campus Delivery Fort Collins Colorado 80523 USA
5. Laboratorio de Ecotono INIBIOMA CONICET Universidad Nacional del Comahue Quintral 1250 Bariloche Argentina
6. Laboratorio de Invasiones Biológicas (LIB) Facultad de Ciencias Forestales Universidad de Concepción Casilla 160‐C Concepción Chile
7. Institute of Ecology and Biodiversity (IEB) Santiago Chile
8. Department of Invasion Ecology Institute of Botany The Czech Academy of Sciences CZ‐252 43 Průhonice Czech Republic
9. Department of Ecology Faculty of Science Charles University in Prague Viničná 7 CZ‐128 44 Prague Czech Republic
10. Department of Land Resources and Environmental Sciences Montana State University Bozeman Montana 59717 USA