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Range DescriptionThis is a widespread and common afrotropical species (Brown 1994), found throughout Central Africa, Angola, Zambia, Zimbabwe, Mozambique, KwaZulu-Natal (South Africa) and the Okavango System in Namibia and Botswana. It is known from Ethiopia, south Sudan, possibly also Lake Nasser and Somalia. It is believed to occur in several wetlands of Kenya, Uganda, Burundi, Tanzania and Malawi, and has a limited distribution in West Africa, mostly found in the Lake Chad catchment. In northern Africa, it was recorded during the 20th Century from Djanet Oasis in southeast Algeria and from Tibesti (Brown 1994) but this is south of this region. In Egypt, it has been recorded from lower and upper Nile, Lake Qaron, the edge of Lake Maryut, and west of Alexandria but it is rare in these sites. The area has been well-surveyed, so it is unlikely to be more widely distributed. Egypt is not a typical area for this species, and its major distribution is further south in Africa. Outside of Africa, in the Arabian Peninsula, it is only known from one record in Ma'bar in Yemen (Wright 1963a, Brown and Wright 1980), although there is no proof that it is still alive there.