1. Entomology-Acarology Laboratory; National Agronomic Institute of Tunisia; 43 Avenue Charles Nicolle 1082 Tunis Tunisia
2. Insect Pest Control Laboratory; Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture; International Atomic Energy Agency; IAEA Laboratories; Seibersdorf Austria
3. Department of Biological Sciences; Macquarie University; North Ryde NSW 2109 Australia