The livability of different instar larva of M. sexmaculatus was significantly different, from the first instar larva to pupa, the livability was 74.29%, 92.41%, 94.52%, 97.83%and 85.93%, respectively.

• 六斑月瓢虫各虫态的存活率差异显著，六斑月瓢虫卵的孵化率为90.；5%25，其1龄、2龄、3龄、4龄和蛹的存活率分别为74