1. University of Puerto Rico, Mayagüez, Department of Agroenviromental Sciences, Agricultural Experiment Station, Juana Díaz, 00795, Puerto Rico, E-mail: (I.C-A.)
2. University of Illinois Urbana-Champaign, Prairie Research Institute Illinois Natural History Survey, Champaign, 61820, Illinois, E-mail: (C.H.D.)
3. United States Department of Agriculture, APHIS-PPQ-NIS, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, Washington, DC 20013-7012, E-mail: (J.N.Z.)