1. Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Hatfield 0028, South Africa
2. Agricultural and Biological Engineering Department, Southwest Florida Research and Education Center, University of Florida, Immokalee, Florida, USA
3. KWS SAAT SE & Co. KGaA, Grimsehlstraße 31, 37574 Einbeck, Germany
4. Citrus Research International, 2 Baker Street, Mbombela 1201, South Africa
5. Department of Conservation Ecology and Entomology, Stellenbosch University, Matieland, South Africa