The Yellow fever mosquito (Aedes aegypti) is a species of African origin and can transmit diseases between people or between animals and people, as yellow fever, the dengue virus, the chikungunya virus, and the zika virus. It has adapted to urban areas and breeds in any microenvironment with stagnant water such as water drains, containers, or tires.

It is now found in Africa and tropical or subtropical countries. There aren’t yet any populations of Aedes aegypti in Spain. However, increases in global mean temperature favour the eventual appearance of Aedes aegypti in Spain.

Adult Aedes aegypti are small and dark brown colored with white lines covering the body and legs. Their appearance is similar to the tiger mosquito (Aedes albopictus) but are in fact a bit different. They are differentiated from other species by 4 lines of white scales in the shape of a lyre on the dorsal side of the thorax.

  • 4 lines in a shape of a lyre

    J.Luis Ordóñez CC BY NC

  • The thorax with four lines in the shape of a lyre

    Photo: Mark Yokoyama (CC BY-NC-ND 2.0)

    aedes aegypti_mark yokoyama_(CC BY-NC-ND 2.0)
  • Brown abdomen with lines and plates

    Photo: Mark Yokoyama (CC BY 2.0)

  • Brown legs with white lines

    Photo: Roger Eritja (Copyright)