DARWIN DALE / SCIENCE PHOTO LIBRARY DARWIN DALE / SCIENCE PHOTO LIBRARY
Deer fly (Chrysops sp.), scanning macrophotograph. This fly feeds upon the blood of any warm blooded animal. It has a painful bite and will suck blood for several minutes. This fly is a vector for diseases such as anthrax, tularemia, hog cholera, equine infectious anaemia and filariasis.
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