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Aedes aegypti
Aedes aegypti
Images en droits gérés : 014285_004

Légende : This photograph depicted a female Aedes aegypti mosquito while she was in the process of acquiring a blood meal from her human host, who in this instance, was actually the biomedical photographer, James Gathany, here at the Centers for Disease Control. The feeding apparatus consisted of a sharp, orange-colored fascicle that was covered in a soft, pliant sheath called the labellum while not feeding. The labellum was shown here retracted as the sharp stylets contained within pierced the host's skin surface, thereby, allowing the insect to obtain its blood meal. The orange color of the fascicle was due to the red color of the blood as it migrated up the thin, sharp translucent tube. When viewed in cross-section, the larger of the two needle-sharp stylets, known as the labrum, takes on the shape of an inverted V, and acts as a gutter, which directs the ingested host blood towards the insect's mouth.

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