in April 2026, desert locusts mainly affected the central-southwestern regions of Morocco, localized northwestern areas of Algeria, and the northern inland areas of Saudi Arabia, affecting 84.8, 20.9, and 18.5 thousand hectares of vegetation, respectively. Due to northward migration and favorable breeding conditions, Morocco's affected area expanded by approximately 20.0 thousand hectares, spreading from the southwest to the center. In Algeria, the affected area remained concentrated in the northwest and largely stable compared to last month; although local risks increased due to minor external inputs and spring greening, overall expansion remained limited. In Saudi Arabia, locusts were mainly in the northern inland, with the affected area expanding slightly while maintaining a stable, low-level epidemic. Over the next two months, central-southwestern Morocco will remain a main breeding area. Adults are expected to migrate northeast and east, raising transboundary risks for Algeria, while sporadic swarms may head south into Mauritania. In northwestern Algeria, habitat conditions have improved due to rainfall, local grazing, and adult incursions, which could trigger population growth. Saudi Arabia remains at a low, sporadic risk level, though limited small-scale spring breeding may occur in north-central and eastern inland regions. Currently, grain crops in Morocco and Algeria are at the critical jointing-to-booting stage, while Saudi crops are in the filling-to-milking stage and summer crops are being sown. This high-vulnerability period demands continuous monitoring to safeguard regional agricultural and pastoral production.