The latest scourge crossing the country has a taste for the big city.
The Asian tiger mosquito, named for its distinctive black-and-white striped body, is a relatively new species to the U.S. that is more vicious, harder to kill and, unlike most native mosquitoes, bites during the daytime. It also prefers large cities over rural or marshy areas—thus earning the nickname among entomologists as "the urban mosquito."
"Part of the reason it is called 'tiger' is also because it is very aggressive," says Dina Fonseca, an associate professor of entomology at Rutgers University. "You can try and swat it all you want, but once it's on you, it doesn't let go. Even if it goes away, it will be back for a bite."