Mosquito maps

Surveillance for invasive mosquitoes

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

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 The maps are based on data (published and unpublished) provided and validated by experts.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

Since the previous update (October 2020), additional ‘Absent’ data were reported for all invasive mosquito species (n=54), and new ‘introduced/established’ (n=69) show:

• Aedes aegypti shows to further spread along the Black Sea coast, since it is newly reported from Crimean peninsula (data from 2016, published in 2020), however the local establishment of the species needs to be confirmed. The elimination of the species from Canaries (its presence was observed in 2017) is confirmed.
• Aedes albopictus is found for the first time in Moldova. More introduction events are reported northward to the current colonised area, i.e. in Austria, Switzerland, and Belgium.
• For Aedes japonicus, introduction events are reported from some areas in Austria and Belgium and the species has established in additional areas in Croatia and Switzerland; For Aedes koreicus some introduction events are reported in Austria and Switzerland, and it is confirmed established in southern Switzerland and on the Crimean peninsula.

Surveillance for native mosquitoes

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

Distribution maps of native mosquitoes

The maps show the current distribution of native mosquito species in Europe at ‘regional’ administrative unit level. The maps are based only on confirmed data (published and unpublished) provided by experts.

For native species the possible distribution statuses are:

• Present: The species has been observed to be present in at least one municipality within the administrative unit.
• Introduced: The species has been introduced in the administrative unit without confirmed establishment.
• Anticipated Absent: the species has never been reported and there is a high probability that it is absent.
• Confirmed Absent: the species has never been reported within the administrative unit and there have been field surveys or studies on mosquitoes within the last 5 years of the distribution status date.
• No Data: No sampling has been performed and no data on the species is available.
• Unknown: The status is unknown

Areas outside the scope of the VectorNet geographical scope are colour-coded as ‘Outside scope’.

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

Since the previous update (October 2020), datasets were completed mainly for Culex pipiens (n=65), Aedes albopictus (n=47), Aedes japonicus (n=43), Culex torrentium (n=35), and Anopheles plumbeus (n=30) and in particular for Switzerland (n=118), Spain (n=90), Germany, (n=75), Italy (n=64), and Austria (n=53). No specific distribution extension is shown but gaps are filled in countries where the species’ presence was already known.