1. Agricultural and Resource Economics, University of Tennessee, Knoxville, TN
2. Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN
3. USDA-ARS Midwest Livestock Insects Research Laboratory, Department of Entomology, University of Nebraska, Lincoln, NE
4. USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory, Kerrville, TX
5. Entomology and Plant Pathology, University of Tennessee, Knoxville, TN