1. Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Nairobi 00200, Kenya
2. Laboratory of Virology, Wageningen University and Research, Wageningen 6708 PB, The Netherlands
3. Institute for Biological Control, Federal Research Centre for Cultivated Plants, Julius Kühn-Institut, Darmstadt 64287, Germany
4. Laboratoire de Pathologie Comparée, Faculté des Sciences, Université de Montpellier, Montpellier 34095, France
5. Entomology and Nematology Department, University of Florida, Gainesville FL 32611, USA
6. Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna A-1400, Austria