Measurements of the insects' wings and other body parts are taken regularly, because they are related to breeding density of hoppers and, hen combined with other observations in the field, may indicate their place of origin. - - Desert locust control in East Africa.. More than forty countries, from West Africa to North India, are now threatened with the biggest desert locust outbreak since 1959. International efforts to control the desert locust are being co-ordinated by the Food and Agriculture Organization (FAO) of the United Nations, which is providing specialized assistance, financing the Desert Locust Information Service and aiding national and regional control with United Nations funds. In East Africa, co-operative control work is being carried out by Ethiopia, Somalia Territory of the Afar and Issa Peoples (formerly French Somaliland), Kenya, Tanzania and Uganda through the Desert Locust Control Organization ? East Africa (DLCO-EA). Sudan, also with UN aid and in co-operation with DLCO-EA, is attempting to save its crops from threatening locust swarms.