Invasive mosquitoes

Distribution maps of invasive mosquitoes

The maps show the current distribution of invasive mosquito species in EU/EEA at ‘regional’ administrative unit level. The maps are based on data (published and unpublished) provided and validated by experts.

Separate maps for the distribution of each of the following exotic mosquito species are currently available:  Aedes aegypti, Aedes albopictus, Aedes japonicus, Aedes atropalpus and Aedes koreicus.

For invasive species the possible distribution statuses are:

• Established: An established population (evidence of reproduction and overwintering) of the species has been observed in at least one municipality within the administrative unit.
• Introduced: The species has been detected (but without confirmed establishment) within the administrative unit.
• Absent: Field surveys or studies on mosquitoes were conducted but the species has not been detected within the administrative unit.
• No data: No sampling has been performed and no data on the species is available within the administrative unit.
• Unknown: It is unknown whether there are field studies on this species within the administrative unit.

Vector distribution status changes in terms of spatial units since the previous update

In July 2024, the map of Aedes albopictus was updated. Since the previous update (May 2024), the main changes are that the updated map shows the species’ establishment in two areas in Belgium, and a correction of its introduction in Pontevedra (instead of Lugo) in Spain.

In May 2024, the map of Aedes aegypti was updated. Since the previous update (October 2023), the main changes are that the updated map shows the species’ spread with an additional introduction into the Canary Islands (Spain).

The maps of Aedes atropalpus, Aedes japonicus, and Aedes koreicus were updated in October 2023. Since the previous update (August 2023), the main changes are:

• Aedes atropalpus: more absences reported thanks to the extension of surveillance in some countries (Estonia, Hungary, Portugal, Türkiye).

• Aedes japonicus: first findings of introduced and already established populations in southern Poland; further establishment in northern Czechia, Hungary, northern Italy, the Netherlands, Slovakia and northern Spain; more absences reported in some countries (Estonia, Portugal, Türkiye).

• Aedes koreicus: the updated map shows further spread in Hungary and northern Italy (established populations) and first report of an established population in Slovenia; more absences reported in some countries (Estonia, Portugal, Spain, Türkiye).

Aedes invasive mosquitoes

Aedes aegypti

Aedes albopictus

Aedes atropalpus

Aedes japonicus

Aedes koreicus

Surveillance for invasive mosquitoes

The surveillance maps shows the regions where surveillance activities for invasive mosquitoes were held in Europe and neighbouring regions.