Abstract: This paper deals with the flight ability of adult Liriomyza sativae at temperatures from 18℃ to 36 ℃,which was determined using a 32 channel, computer-monitored flight mill system. Their maximum flight distance，speed and duration reached 8.22 km, 1.10 km/h and 253.5 min at 33℃, respectively. The suitable temperatures for their flight ranged from 21℃ to 36℃ and the average flight distances were 0.32～0.95 km for the female and 0.22～0.78 km for the male at these temperatures. The flight distance, speed and duration increased with increasing temperature between 18℃ and 33℃. The flight ability of the female was greater than the male. These results suggested that L. sativae could actively migrate with the maximal dispersal distance of about 0.95 km.

Key words: Liriomyza sativae, flight potential, temperature