A novel catch basin mosquito emergence trap

Urban water catch basins provide a primary source of production for Culex pipiens, a vector of West Nile virus (WNV). These container habitats are targeted by mosquito abatement efforts and the effectiveness and longevity of larvicide are critical to the reduction of vectors and arbovirus transmission. Larval sampling of catch basins does not provide a goodproduce an acceptable measure of adult production since commonly used (S)-Methoprene-based larvicides are designed to inhibit normal pupation, thus allowing the presence of larvae that will never emerge. We have developed a simple emergence trap designed to sub-sample emerging adult mosquitoes in treated and un-treated catch basins. The effectiveness of the trap was evaluated both in the laboratory and in the field and the results will be provided.