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Description:An Armigeres subalbatus mosquito of the “Nagasaki colony” was depicted in this 2005 photograph, as she was ingesting a blood meal after having lighted on a human finger. Note the pooling of the blood inside the mosquito’s abdomen as it fills its stomach. The blood was being suctioned through the insect’s proboscis, which is its straw-like mouth that is used to penetrate the host’s skin much like a syringe.
Also of interest is the presence of a clear, colorless drop of fluid originating at the distal tip of the insect’s abdomen. This fluid was what was remaining within the mosquito’s alimentary tract, and is being forced out by the pressure created as blood enters the stomach. This clear fluid will be replaced with blood, which will be expelled as the gluttonous mosquito continues to ingest more, and more blood.

This mosquito is a vector of the filarial parasite Wuchereria bancrofti, and upon examination of captured specimens in the wild, at times has also been found to be naturally infected with the Japanese Encephalitis virus. This species can be found throughout Asia, from Pakistan in the west, all the way through Southeast Asia to Indonesia, and north to Japan and Korea.

High Resolution: Click here for hi-resolution image (18.28 MB)
Content Providers(s):CDC/ Frank Collins, PhD.
Creation Date:2005
Photo Credit:James Gathany
Links:CDC – Nat. Center for Infectious Diseases; Div. of Vector-Borne Infectious Diseases: Japanese Encephalitis
CDC – Nat. Center for Infectious Diseases; Div. of Parasitic Diseases; Filariasis
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.