DAVID SCHARF / SCIENCE PHOTO LIBRARY DAVID SCHARF / SCIENCE PHOTO LIBRARY
Yellow fever mosquito. Coloured Scanning Electron Micrograph (SEM) of the head of a female yellow fever mosquito Aedes aegypti. The head is at upper centre, with compound eyes (red). There are two hairy antennae, and a long proboscis (at centre) used for sucking blood. The swollen abdomen of this mosquito suggests it has just had a blood meal. Female Aedes aegypti mosquitoes are carriers of an arbovirus which causes yellow fever in humans. Patients develop a fever, and the skin becomes yellow due to jaundice. Yellow fever was once a fatal infection throughout the tropics, but now occurs only in parts of tropical Africa and South America. Magnification: x40 at 6x6cm size.
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