Abstract：Morphological characteristics at different stages and feeding,reproductive behaviors of Donacia provosti adult were described by laboratory combined with field investigation.The results of biological studies indicated that Donacia provosti had one generation per year and it overwintered as larvae in Hubei Province.The development duration of eggs,pupas,adults were 8-10,15-18,7-12 days respectively.Fecundity was 175.67 eggs laid per female.Its hatching rate increased and egg development duration decreased between 22-32 ℃ and the hatching rate could reach 90 % when temperature was over 25 ℃.The experiment showed that the development threshold temperature was(11.74±2.36)℃ and the effective and accumulated temperature was 158.08±22.98 degreeday.
