n Germany mosquitoes were traditionally considered a nuisance. In recent years, the detection of arboviruses, like West Nile Virus (WNV), in domestic mosquito species (as well as in animal and human hosts) and the emergence of invasive species, like Aedes Albopictus, which transmit several highly pathogenic viruses for humans, resulted in mosquitoes also being considered a risk factor for disease transmission. Therefore, since about a decade, several national and regional mosquito monitoring and arbovirus surveillance projects have been initiated.