From the following options identify the vector for West Nile virus, filariasis, Japanese encephalitis, St. Louis encephalitis, and avian malaria.
Culex
Culex is a genus of mosquitoes, several species of which serve as vectors of one or more important diseases of birds, humans and other animals. The diseases they vector include arbovirus infections, West Nile virus, filariasis, Japanese encephalitis, St. Louis encephalitis, and avian malaria.