Brown locust outbreak in southern Africa
April 11, 2022
By Mira Ries—Global Locust Initiative
Above-average rainfall across many parts of Southern Africa has allowed populations of the Brown Locust (Locustana pardalina) to skyrocket. Initial outbreaks started in 2020 in the eastern and south-eastern Karoo, the region endemic to the Brown Locust. The usually arid Karoo has transformed into a lush oasis, causing South African farmers to trade the hardship of drought for the task of managing the worst outbreak in the last ten years.
Brown Locust outbreaks are a consistent natural phenomenon brought about by plentiful summer rains. Their outbreak zone covers approximately 250,000 km2 of the Karoo, extending out of South Africa into southern Namibia. In the past, plagues have developed that span the entire southern African sub-continent up to the Zambezi River. Periodic upsurges are known to spread further into Namibia, Botswana, and Zimbabwe, and to a less documented extent, into Zambia, Mozambique, and Angola. To date, this current outbreak is primarily impacting South Africa and Namibia, with some 2021 reports in Botswana and Angola.