【Background】 Agasicles hygrophila was introduced to control Alternanthera philoxeroides. This paper studied two geographically distinct populations of Agasicles hygrophila to examine their differential adaptive responses to temperature. 【Method】The fecundity and survival of Agasicles hygrophila of a Thailand population and a Fuzhou, China, population were exposed to three different temperatures by continuously rearing over a period of three generations. 【Result】The study showed that the reproductive rate of the Thailand population was faster than the Chinese population of Fuzhou when exposed at the same temperature. With temperatures increasing, the fecundity of the two geographic populations both decreased significantly, but the oviposition amount of Thailand tropical population was more than Fuzhou local population. At the same time Agasicles hygrophilaof Thailand tropical population had longer lifetime than Fuzhou local population at the test temperature. 【Conclusion and significance】 The reproductive capacity of Thailand tropical Agasicles hygrophila, with stronger adaptation to temperature, is better than Fuzhou local population. It can establish populations more rapidly in the summer and can be beneficial to control of Alternanthera philoxeroides.