There are approximately 3,500 mosquito species in the world. Of those, only a few hundred are known to bite humans. And just two have adapted to breed almost exclusively in urban environments where they are in close proximity to people.
Globally, there are more than 3,000 mosquito species, with around 150 native to the U.S. To many listeners – a mosquito is a mosquito. But depending on the species that bites you, mosquitoes can be a nuisance or a public health threat.