Temporal trends in the geographic range of An. arabiensis breeding sites in the three study zones. Monthly surveys were carried out at each zone mostly in urban and peri-urban habitats near the coast or at altitude ≤ 400 meters. Compared to the previous records (Figure 5 below) these figures show a clear temporal trend in the reduction of the distribution range of An. arabiensis breeding habitats. They persist in certain discrete foci in western, northeast and south where however, absolutely high numbers of larval habitats were observed in 2008-2009, compared to previous years.