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Mosquitoes Underground?
"); document.write("Larvae of Culex mosquitoes have been found in many underground structures that are used for cleaning storm water, including vortexes and grit chambers.
If there's an opening for female mosquitoes to get in and lay their eggs, if the structure holds water, and if mosquitoes can get out again after they develop, it can produce mosquitoes. And Culex mosquitoes are the type most likely to carry West Nile Virus.