Causus resimus (PETERS, 1862)
Green Night Adder

Chad, Sudan, Ethiopia, Somalia, Cameroon, Central African Republic, Democratic Republic of the Congo, Uganda, Rwanda, Burundi, Kenya, Tanzania, Angola

Causus rhombeatus (LICHTENSTEIN, 1823)
Rhombic Night Adder

Chad, Sudan, Ethiopia, Nigeria, Cameroon, Central African Republic, Congo, Democratic Republic of the Congo, Uganda, Rwanda, Burundi, Kenya, Tanzania, Angola, Zambia, Malawi, Zimbabwe, Mozambique, Namibia, Botswana, South Africa, Swaziland