John F. Barthell, jbarthell@ucok.edu¹, Robbin W. Thorp, rwthorp@ucdavis.edu², John M. Randall, jarandall@ucdavis.edu³, Adrian M. Wenner, wenner@lifesci.ucsb.edu², Robert T. Reidenbaugh, rreidenbaugh@ucok.edu¹, and Kristi D. Rice¹. (1) University of Central Oklahoma, Biology, 100 N University Drive, Edmond, OK, (2) University of California, Department of Entomology, One Shields Avenue, Davis, CA, (3) The Nature Conservancy, Invasive Species Initiative, Department of Plant Science, University of California, Davis, CA