1. Department of Biology, and School of Earth, Environment and Marine Sciences, The University of Texas-Rio Grande Valley, 1201 W. University Avenue, Edinburg, TX 78539
2. U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS), Cattle Fever Tick Research Laboratory, 22675 N. Moorefield Rd., Bld. 6419, Edinburg, TX 78541
3. International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772-00100, Nairobi, Kenya