Presence records of Aedes vexans (Diptera: Culicidae) in Germany

Aedes vexans, one of the most widespread and abundant mosquito species in Germany, is a demonstrated or putative vector of numerous pathogens of humans and animals. To document its spatial and temporal occurrence, we compiled a comprehensive dataset based on both passive and active mosquito monitoring. The dataset comprises 6422 occurrence records collected between 2011 and 2023. They document the presence of 225565 individual mosquitoes from 2784 distinct locations. Of the total occurrences, 2963 originate from citizen science contributions, while the remainder stem from active monitoring.Passive monitoring was conducted through the citizen science project “Mückenatlas”, in which volunteers collected and submitted mosquito specimens from across Germany. All citizen-collected specimens were subsequently identified by professional entomologists. Active monitoring was carried out by experts using a wide range of standardized entomological methods, including trapping, aspirating and netting adults as well as sampling larvae and pupae by dipping and sieving. The dataset, or subsets thereof, has already been used in scientific publications.