Stormwater drains and catch basins as sources for production of Aedes aegypti and Culex quinquefasciatus.

•Stormwater drains and catch basins are important sources for production of mosquitoes in Mérida City.•Stormwater drains and catch basins in Mérida City contain standing water in both wet and dry months.•Stormwater drains and catch basins in Mérida City are particularly important development sites for Ae. aegypti and Culex quinquefasciatus.•Stormwater drains and catch basins receive water from rainfall as well as by human action.•Mérida City is endemic for dengue.