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Mosquito Facts

Although there are fourteen species of mosquitoes found in Bannock County, there is one species that is know to carry and transmit the West Nile Virus. This is the Culex species and the varieties found in Bannock County are Culex tarsalis and Culex pipiens (shown below). These are the two species that we regularly test for West Nile Virus.

Culex tarsalis Mosquito carries West Nile Virus
Culex tarsalis Mosquito
Culex pipiens Mosquito
Culex Pipiens Mosquito


These mosquitoes love to breed in stagnant water.  They over-winter as eggs and West Nile Virus remains viable to be passed on when the mosquitoes hatch in the spring. Get more info on

Did You Know?
There are over 3000 species of mosquitoes.  Fourteen species have been identified in Bannock County.

We work hard to keep our District residents as safe as possible from the threat of mosquitoes and West Nile Virus. It is a constant battle, but you can help!

Check out our page for Controlling Mosquitoes Around Your House for ways to reduce mosquito habitat in your area. Less habitat means fewer mosquitoes!

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