This is the most important mosquito of arboviruses in western North
America. Responsible for maintenance, amplification and epidemic
transmission of Western Equine, and St Louis viruses in irrigated and
riparian habitats. It is also capable of transmitting: Venezuelan
Equine, Japanese Encephalitis, Murray Valley, West Nile and many others.
Larval habitat is usually among surface water pools that are frequently surrounded by grasses and annual vegetation and agricultural tail water. Larval development is 7 days to 4 weeks depending on temperature and food supply. Females feed mostly on birds shortly after sunset. Flight range is up to 17 miles.
The southern house mosquito
is found throughout the southern half of the United States. Its Latin
name refers to five lines that can be seen on the length of the body.
This mosquito prefers to lay eggs in small pools of water, and can
utilize water that is polluted with organic material.
This mosquito enters houses readily, hence its common name. It can be an
annoying pest at night, not only because of its bite but also because
of its high-pitched buzz. The southern house mosquito can transmit
nematodes which cause dog heartworm and viruses causing encephalitis.
Typical Breeding Sites
Tin cans, old
tires, decorative ponds, bird baths, horse troughs, overgrown ditches,
unmaintained swimming pools, open septic tanks, sewage and industrial
Breeding Site Selection
Eggs are laid in cluster directly on the surface of standing water.
Continuous reproduction cycles as long as water stands and conditions
Seldom seen in daytime, rests in shrubbery and other cool sheltered
places. Active and biting during nighttime hours, indoors and out. Rests
in open weeds and grass during daytime, but will rise up and bite if