Orthetrum brachiale is found in which country bordered by Lybia and Sudan ?
Orthetrum brachiale:  It is found in Angola, Benin, Botswana, Burkina Faso, Cameroon, Central African Republic, Chad, Comoros, the Republic of the Congo, the Democratic Republic of the Congo, Ivory Coast, Egypt, Equatorial Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Mauritius, Mozambique, Namibia, Niger, Nigeria, Réunion, Seychelles, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe, possibly Burundi, and possibly São Tomé and Príncipe. Chad:  It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest and Niger to the west.
Chad