1. School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
2. Department of Zoology, Michigan State University, East Lansing, MI 48824, USA
3. Department of Biology, Lake Forest College, Lake Forest, IL 60045, USA
4. Arid Land Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Maricopa, AZ 85138, USA