关键词: 班布蚋, 季节消长, 北湾地区, 额尔齐斯河下游

Abstract: Objective To study the seasonal abundance of Simulium maculatum at Beiwan region. Methods Using bed-curtain to collect S.maculatum in 3 kinds of surroundings every ten days from April to the time that S.maculatum disappeared. Collecting 6 times a day to investigate the density, and the trapping time was an hour before sunrise, an hour after sunrise, 12 o’clock, 16 o’clock, an hour before sunset and an hour after sunset. Results The density of S.maculatum was tied up with the varieties of surrounding. It’s highest in artificial forest(51.54%), lower in arid salina(37.18%), the lowest in forest with thick weed(11.28%). S.maculatum appears from the middle ten-day of April to the first ten-day of August, and the peak is in the last ten-day of June. The seasonal abundance was similar in different surroundings. Conclusion The density of S.maculatum was very high and its damage was also vary serious in June, especially in artificial forest of Beiwan region.