The mean number of potential generations in Germany was 4.72 (range 1.92–5.77) for present climate conditions (Fig. 5a). For six locations (Additional file 1: Table S4), at which the occurrence of the Asian bush mosquito is confirmed, the potential number of generations ranged between 4.62 and 5.60 potential generations per year (Fig. 5a). There were no regions with equal or less than one potential generation per year in Germany and only in a small part of the Alps (Berchtesgadener Land), two or less potential generations per year were suggested by the model.Fig. 5Number of potential generations of the Asian bush mosquito in Germany. Estimation of the number of potential generations per year (a) at present and (b) in the future (CCSM4; 2041 to 2060) with a low greenhouse gas emission model (RCP2.6)