Abstract:In order to evaluate the effects of the temperature on the developmental of Athetis lepigone (Möschler), the developmental duration, survival rate and fecundity of A.lepigone were studied and the life tables were constructed at six different temperatures (16, 20, 24, 28, 32 and 36 ℃) in the laboratory. The results showed that A.lepigone could not complete its life cycle at 36 ℃. The developmental duration decreased while the temperature was increased from 16 to 32 ℃, and the shortest developmental duration exited at 32 ℃ with 27.17 d. The development threshold temperature was 8.69 ℃, and the effective accumulated temperature required for the whole generation was 604.45 degree-days. The lifespan of the adults decreased with the temperature increasing in the range of 20-32 ℃, and there was no significant difference in terms of the lifespan between the male and female adults. The number of eggs laid per female was 283.8 and 261.8 at 20 ℃ and 24 ℃, respectively, which was higher than that at the other temperatures. Innate capacity of 82.0 and index of population trend of 0.82 were higher at 24 ℃ than those at the other temperatures, indicating that the optimum temperature for the development and fecundity of A.lepigone was 24 ℃.