The study was aimed at a new insect population character——Starvation endurance ability. In the situation of lack of prey, the insect population mortality gradually increased. While it reached 50%, the survival time is the starvation endurance threshold ( T 50 ). There is a close relationship between the stage mortality ( M ) and the survival time( T ) of Chrysopa phyllochroma larvae and it could be imitated with a normal distribution equation. The value of T 50 of insect population i...