Found in large parts of North America, this species has recently been reported in Maple Ridge, British Columbia. Native global range: northeastern Russia to southern China and Taiwan, including Japan, Korea, and associated islands (Kaufman and Fonseca, 2014).
Reference:
Kaufman, Michael G. and Dina M. Fonseca. 2014. Invasion Biology of Aedes japonicus japonicus (Diptera: Culicidae). Annu Rev Entomol. 2014; 59: 31–49. doi: 10.1146/annurev-ento-011613-162012.