Vector Type
Mosquito
Vector Species Name
Culex quinquefasciatus
Vector Common Name
Southern House Mosquito

Vector Information

Culex quinquefasciatus are commonly found from coast to coast in the southern third of the United States, in both tropical and semitropical regions. Though primarily peridomestic, they are frequent in natural and anthropogenic habitats in the southern third of the United States and reproduce in stagnate waters such as ditches, catch basins tree holes, used tires, clogged gutters, and poorly maintained water features (e.g. bird baths). The breeding cycle (egg, larvae, pupae, adult) of Cx. quinx takes approximately one to two weeks at summer environmental temperatures, but can take several months in cooler conditions. These mosquitos often overwinter outdoors and are known to breed year round throughout most of their range. Body length is approximately four millimeters and they are generally brown in appearance with a banded lower abdomen. Opportunistic feeders, Cx. quinx will feed on birds and mammals, including humans, and is active overnight. This species is the primary vector of St. Louis encephalitis virus (SLEV) in the southern tier of the United States, but is also an important vector of West Nile virus and western equine encephalitis virus.

Found In
AL
AR
CA
CO
DE
FL
GA
HI
IL
IN
IA
KS
KY
LA
MD
MI
MS
MO
NE
NV
NJ
NM
NC
OH
OK
PA
SC
TN
TX
UT
VA
WV
DC

*Disease transmission varies locally. This map depicts where vectors can be found geographically and provides information about diseases these vectors might carry. Vectors might be present in a state or locality, however, and not be carriers of any particular disease. In addition, identified vectors may have a presence in a state, but may not be found throughout that state.