1. Laboratory of Zoology, Faculty of Science University of Yaoundé 1 Yaoundé Cameroon
2. UPR Bioagresseurs Analyse et Maîtrise du Risque CIRAD Montpellier France
3. International Centre of Insect Physiology and Ecology Nairobi Kenya
4. Department of Zoology and Animal Physiology, Faculty of Science University of Buea Buea Cameroon
5. Royal Belgian Institute for Natural Sciences Brussels Belgium