This project aims to determine the inheritance pattern of diapause induction in Aedes albopictus based on mosquito lines crosses with contrasted diapause phenotypes. We confirmed the existence of a genetic basis to diapause induction with a dominant heredity pattern. However, we observed a high diapause induction variability in F1 hybrids, a result that contradicts the first Mendel law concerning monogenic traits and suggests a polygenic pattern of inheritance for diapause induction in this mosquito species. Increasing inbreeding generations in hybrids parents have lead to 100% diapause induction, which seems to confirm the polygenetic pattern of inheritance. Characterizing the genetic basis of diapause induction in Ae. albopictus will open an avenue for genetic control strategies that can curb the territorial expansion of this vector across temperate regions.