We constructed a battery-powered backpack aspirator to collect adult Aedes aegypti mosquitoes. This simple, easily constructed aspirator facilitates the indoor collection of this important vector species. The collections made with the aspirator provide useful information about the biology and behavior of Ae. aegypti that can be used in education and vector control programs and in the evaluation of ultra-low volume insecticide spray programs directed against this species. The cost for construction is ca. $150.