The Asian bush mosquito is known to be multivoltine in Japan and North America [34, 38]. Immature and mature stages are found at the same time in the same place. Thus, it is assumed that overlapping generations exist [36, 40]. We confirm this observation at our sampling site. Our model to calculate the number of potential generations per year is based on the correlation between the age at emergence and the temperature correlation. We shifted up this function by 14 days to account for copulation, blood meal consumption and egg production. There is evidence that eggs have to mature for 12 to 17 days after oviposition . Williges et al.  and Hoshino et al.  report 28 generations in eight years (3.5 generations per year), respectively, 35 generations in five years (7 generations per year) for laboratory colonies of the Asian bush mosquito maintained at 25 °C. To our knowledge, no estimates for the potential number of generations in field populations are reported yet.