Abstract: The cabbage beetle, Colaphellus bowringi Baly, is a serious pest of crucifers in China. The beetle aestivates and hibernates as adult in the soil. The incidence of diapause is mainly controlled by temperature and photoperiod. Effects of photoperiod and temperature on the life history traits of post-diapause adults in C. bowringi were investigated under laboratory conditions. At 25℃, survivorship, longevity, daily egg production, mean number of eggs laid per female per day and total number of eggs laid per female of post-diapause adults had no significant difference between under L14∶D10 and under L12∶D12. Under L14∶D10, the lifehistory traits of post-diapause adults differed significantly at different temperatures (18℃, 22℃, 25℃). The total number of eggs laid and mean number of eggs laid per female per day of post-diapause adults decreased, whereas the longevity of females significantly increased with temperature decreasing. Diapause could be reinduced in a few individuals at 18℃. 

Key words: Colaphellus bowringi, post-diapause adult, photoperiod, temperature, longevity, survivorship, egg production