Desert Locust Bulletin 483 (December 2018)
General situation during November 2018
Forecast until mid-January 2019
Desert Locust outbreak develops in Sudan and Eritrea
Favourable ecological conditions and extensive breeding caused a Desert Locust outbreak to develop in the winter breeding areas along the Red Sea coast in Sudan and Eritrea during December.
Although breeding commenced in mid-October and continued throughout November, the extent of the breeding was not fully detected until December when widespread hatching occurred, groups of hoppers and adults began forming by mid-month, and adult groups moved back and forth across the Sudan/Eritrea border. By the end of December, a second generation of breeding had started as several mature swarms formed and laid eggs near the border. Ground teams treated 7,235 ha in Eritrea and 1,247 ha in Sudan during December.
During the forecast period, first-generation hoppers and adults will form more groups and a few bands and swarms. This will be supplemented by second-generation hatching in January in both countries that will give rise to additional hopper groups and bands. Immature adult groups and small swarms could start to form by about mid-February. The extent of second-generation breeding will depend on rainfall and ecological conditions.
Elsewhere, small-scale breeding occurred in southeast Egypt, on the Red Sea coast in Saudi Arabia, and in southern Oman. A few small groups or swarms may form in the Empty Quarter near the Yemen/Oman/Saudi Arabia border where good rains fell from Cyclone Luban. So far, at least one small immature swarm has been reported in central Saudi Arabia south of Riyadh near Wadi Dawasir on 6 January 2019. Control operations were immediately undertaken.
The situation remained calm in the other regions and no significant developments are likely.