Southern house mosquito, Culex quinquefasciatus Say. Adults similar in almost all respects to C. pipiens except abdominal basal white bands narrowly joined or disconnected from lateral patches; breeding sites similar to those of C. pipiens; occurs throughout the southern states and as far north as Nebraska, Iowa, Illinois, and Ohio.
The Asian Tiger and Southern House mosquito have both been identified as carriers of the West Nile Virus.
Mosquitoes are commonly separated into 3 groups based on where and how their eggs are laid. After a blood meal, the female will lay her eggs:
(1) singly on water, eggs with floats, usually hatch within a few days, e.g. Anopheles;
(2) in rafts on water with up to 100+ eggs per raft, usually hatch within a few days, e.g. Culex; and
(3) singly in semi=dry places such as mist soil near water, do not hatch until water has risen and inundated them, can lie dormant for 3-5 years. e.g. Aedes.
Mosquitoes serve as vectors of many important diseases affecting humans including West Nile Virus, malaria, yellow fever, dengue fever, filriasis, and encephalitis. Refer to the chart entitled “Biological Data on Medically important Mosquitoes in the U.S.” for a summary of such diseases. Also of interest is the dog heartworm (dirofilaria immitis (Leidy)) which is a common mosquito-transmitted filarial parasite of dogs and is a serious problem from Minnesota to Illinois to Texas and eastward.
On the household level, relief can be achieved by preventing entry to structures via proper screening and sealing, the application of appropriately labeled residuals to resting surfaces, and ULV treatment to infested rooms. On the personal level, the use of repellents is quite effective. In areas of heavy infestation, full-head nets (similar to bee veils) are useful when outdoors.
It should be mentioned that emptying weekly, or eliminating completely, containers which hold water on one’s own property can be of great help in reducing the number of local mosquitoes. This is especially true for mosquitoes which live in close association with humans and have short flight ranges.