-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-Flies Order (Diptera)

-Nematoceran Flies (Suborder Nematocera)​

-Mosquitoes and Midges (Infraorder Culicomorpha)

-Superfamily Culicoidea

-Mosquitoes (Family Culicidae)

-Culicine Mosquitoes (Subfamily Culicinae)

-Tribe Culicini

-Genus Culex

The Culex genus of mosquitoes (sometimes referred to as common house mosquitoes) encompasses several species which are capable of transmitting diseases. Adults are small, slender insects with long legs, narrow wings, and a forward-projecting proboscis used for feeding. Their coloration is generally muted—brown, gray, or tan—without the bold black-and-white patterns seen in some other mosquito genera. Females are the biting sex, requiring blood meals to develop their eggs, while males feed primarily on nectar and plant sugars. These mosquitoes are typically most active at dusk and during the night, when females seek out hosts—including birds, mammals, and humans—guided by carbon dioxide, body heat, and scent.