- Culex, genus Culex - type genus of the Culicidae: widespread genus of mosquitoes distinguished by holding the body parallel to the resting surface
--1 is a kind of arthropod genus
--1 is a member of Culicidae, family Culicidae
--1 has members:common mosquito, Culex pipiens; Culex quinquefasciatus, Culex fatigans