23734A

23734A
Caption: Common house mosquito proboscis tip (Culex spp.). The proboscis contains six parts: two pairs of sharp, flexible cutters (serrated "blades" and sharp tipped "knives") surrounding a pair of fine tubes - one for sucking up blood, the other for dripping a chemical into the wound that keeps the blood flowing. Culex species lay their eggs in the form of egg rafts that float in still or stagnant water. In the United States, West Nile virus is transmitted primarily by Culex pipiens mosquitoes. Culex spp. become infected by biting certain birds carrying the West Nile virus and in turn transmits the virus to humans where it can cause encephalitis and meningitis. Culex spp. are also disease vectors of western equine and Saint Louis encephalitis. In addition, Culex spp. are carriers of viral encephalitis and filariasis.
Magnification*: x60
Type: SEM
Copyright 2004 Dennis Kunkel Microscopy, Inc.
Keywords: 23734A,01.01.04,common house mosquito,Culex,Culex pipiens,disease carrier,disease vector,encephalitis,filariasis,human disease,insect,insect vector,insects,invertebrate,invertebrates,meningitis,northern house mosquito,pest,proboscis,proboscis tip,viral encephalitis,West Nile virus,SEM