1. Malaria Entomology Research Unit, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa.
2. Vector Control Reference Unit, National Institute for Communicable Diseases, National Health Laboratory Service (NHLS), Johannesburg, South Africa.
3. School of Animal, Plant, and Environmental Sciences, University of Witwatersrand, Johannesburg, South Africa.