DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of 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. West Nile virus and in turn transmits the virus to humans where it can cause encephalitis and meningitis. Culex spp. Saint Louis encephalitis. In addition, Culex spp. Magnification: x60 when shortest axis printed at 25 millimetres.
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