1. United States Department of Agriculture, Agricultural Research Service, Plains Area, Knipling-Bushland U.S. Livestock Insects Research Laboratory, Cattle Fever Tick Research Laboratory., Edinburg, TX, USA
2. Department of Biology, University of Texas-Rio Grande Valley, Edinburg, TX, USA
3. USDA-ARS, Exotic and Invasive Weed Species Research Unit, Albany, CA, USA
4. USDA-ARS, European Biological Control Laboratory, Montpellier, France