3.Factors influencing population 1)Climate conditions >Prefer middle temperatures and high humidity; optimal temp.15-30C and RH+60%; >Precipitation and humidity would influence the overwintered larvae to pupate,adults to oviposit and eggs to hatch.At the same time,also influence the parasitoid wasp's population. >facultative diapause insect1) Climate conditions ¾ Prefer middle temperatures and high humidity; optimal temp.15-30 ℃ and RH +60%; ¾ Precipitation and humidity would influence the overwintered larvae to pupate, adults to oviposit and eggs to hatch. At the same time, also influence the parasitoid wasp’s population. ¾ facultative diapause insect 3. Factors influencing population 3. Factors influencing population