1. Biopesticides Group, International Centre for Genetic Engineering and Biotechnology, Wernher & Beit Building (South), UCT Campus, Anzio Road, Observatory, Cape Town, South Africa
2. Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
3. Department of Entomology, College of Agriculture and Natural Resources, Michigan State University, Plant and Soil Sciences, East Lansing, MI, USA
4. Department of Plant Sciences, School of Agricultural Sciences, University of Zambia, Lusaka, Zambia