McEvey, Shane Furze2019-07-302019-07-301988https://hdl.handle.net/10539/27819A thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of doctor of PhilosophyenDrosophila -- Genetics.Drosophila -- Geographical distribution.Drosophilidae -- Genetics.Drosophilidae -- Geographical distribution.Hybridization.Species.Courtship of animals.Sound production by insects.Courtship and hybridization in the Drosophila Nasuta subgroupThesis