Entomologists Walter Leal and Zainulabeuddin Syed of the University of California, Davis, wanted to know what lures Culex pipiens quinquefasciatus, better known as the southern house mosquito.

• 致倦库蚊尽管不是唯一携带西尼罗病毒的蚊种，但却是这种病毒的主要携带者。