The mosquito genus is a group of mosquitoes that are classified by their scientific name. The two most common genera of mosquitoes are Culex and Aedes, both of which have five letters in their scientific names. Culex mosquitoes are known for transmitting diseases such as West Nile virus, while Aedes mosquitoes are known for transmitting diseases such as Zika virus and dengue fever. Both genera of mosquitoes are found in many parts of the world and can be a nuisance to humans.