Thesis (Ph.D.)--University of the Witwatersrand, Faculty of Science, 1998. / This study was initiated in order to determine the identities and distribution patterns of the anopheline fauna, more especially the malaria vectors, in regions of Botswana prone to malaria epidemics. Field samples collected from Shakawe, Maun and Kasane over three consecutive years were subjected to morphological, cytogenetic, isoenzyme and PCR analyses. The results established that Anopheles arabiensis and Anopheles funestus were the predominant vector species.