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 The maps are based on data (published and unpublished) provided and validated by experts.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 2021), the main changes are:

• Aedes aegypti: additional negative sites (visible on maps: Croatia, Netherlands (formerly ‘introduced’), Spain); introductions still occur in the Netherlands, but populations are regularly eliminated.
• Aedes albopictus: updated maps show the species’ spread in Algeria, France, Germany, Spain, Ukraine (Crimea).
• Aedes atropalpus: the Netherlands have become all green (absent) since all introduced populations have been certified as eliminated; additional negative sites were reported in Croatia and Spain.
• Aedes japonicus: new introduction events reported from Basque country, Spain, and from Slovakia; additional negative sites were recorded in Croatia and Spain.
• Aedes koreicus: updated maps show further spread in Germany and first introduction in the Netherlands; additional negative sites were reported in Croatia and Spain.

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 2021), datasets were completed in particular for Anopheles superpictus, Culex torrentium, Coquillettidia richiardii, Aedes detritus/coluzzii, Aedes vexans vexans, Culex modestus, and Anopheles plumbeus, mainly by reporting ‘Anticipated Absent’ for countries where the species has never been observed. Important data sets for the occurrence of native species are included for Finland and Estonia, for which all maps can now be considered as completed.