Plagues of the Desert Locust (Schistocerca gregaria) have threatened agricultural production in Africa, the Middle East and Asia for centuries. The livelihood of at least one-tenth of the world’s human population can be affected by this hungry insect. The Desert Locust is potentially the most dangerous of the locust pests because of the ability of swarms to fly rapidly across great distances. It has two to five generations per year. The northern highlands of Ethiopia (Tigray) and Eritrea slow the movements of desert locusts to the breeding areas of the Red Sea coast. Potential desert locust plagues originating in east Africa can be prevented if action is taken during or before localized outbreaks in Eritrea and Sudan (Jahn 1993). The 2004 desert locust outbreak has caused significant crop losses in West Africa and had a negative impact on food security in the region. While the Desert Locust alone is not responsible for famines, it can be an important contributing factor.