1981年,作者等对兰州地区蚊类作了调查,发现3属13种,其中淡色库蚊占绝对优势,了解其习性,对控制和降低蚊类密度有着积极作用。鉴于兰州地区淡色库蚊夜晚活动规律研究尚未见前人报告,为此,于同年7月22—25日,对兰州地区淡色库蚊夜晚动态作了初步观察,兹将结果报告如下: In 1981, the authors surveyed mosquitoes in Lanzhou and found 13 genera of 3 genera, of which Culex pipiens pallenshad the absolute predominance. Understanding their habits played a positive role in controlling and reducing mosquito densities. In view of the late night activities of Culex pipiens pallens in Lanzhou have not been reported previously, for this reason, in the same year from July 22 to 25, preliminary observations on the dynamics of Culex pipiens pallens in Lanzhou at night were made. The results are reported as follows: