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The world’s climate is changing. Aphids are emerging as lookouts of climate change and they are a good model to understand these environmental changes especially through migratory behavior. We monitored of the occurrence of aphid in same place (Pyeongchang) of seed potato field since 1977 in Korea. Dates of the start of spring migration of these aphids’ species were getting earlier. And, the pick of autumn migration were gradually move to winter season. Moreover, annual total numbers of collected aphids were also dramatically increased during 40 years. There is potential threats of distribution expansion of aphid species in Korea where is the hot spot of climate change with average temperature over 1.7 °C increase for 4 decades. Therefore we hypothesized that aphids’ migration pattern could be associated with temperature
