1. Florida Medical Entomology Laboratory, Institute of Food and Agricultural Sciences, University of Florida, 200 9th St. SE, Vero Beach, Florida 32962, USA
2. Tampa Branch Laboratory-Virology Section, Florida Department of Health and Rehabilitative Services, 3952 West M. L. King, Jr. Boulevard, Tampa, Florida 33614, USA
3. Department of Vector Biology and Control, Institute of Microbiology and Epidemiology, 23 Qilizhuang Road, Fengtai District, Beijing, People's Republic of China.
4. Present address: Department of Biology, Northeastern University, Boston, Massachusetts 02115, USA
5. Department of Entomology, University of Maryland, College Park, Maryland 20742, USA