Acknowledgements

The investigations reported in this document were fully funded by the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ, German Agency for Technical Cooperation) through sponsorship of a Senior Visiting Fellowship, for which the author is grateful. The logistical support provided by the International Centre for Research in Agroforestry, Nairobi, Kenya (ICRAF), is gratefully acknowledged. I also thank Dr M.R. Rao, Programme Leader, Component Interactions, ICRAF, for his supervision and direction. Mr B.W. Bondole helped in various ways, Mr S. Mburu gave computer assistance and Ms E. Muhenge provided secretarial assistance (all three from the Training and Information Division, ICRAF).

The International Centre for Insect Physiology and Ecology (ICIPE), Nairobi, and the Kenya Forestry Research Institute (KEFRI), Muguga, Kenya, both granted permission to use their library and documentation facilities. Thanks are also due to those who responded to the questionnaire. The insect identification services provided by the International Institute of Entomology, London, and the National Museums of Kenya, Nairobi, are gratefully acknowledged. I am grateful for the support extended by Dr E. Akyeampong (Gitega, Burundi), Dr A.I. Niang (Butare, Rwanda) and Dr B. Duguma (Yaounde, Cameroon), all of ICRAF, during my visits to the AFRENA sites.