麻天牛(Thyestilla geberi Fald.)是为害麻类的主要害虫之一,关于此虫的生活习性,在东北还缺乏详细记载。我们于1957—1958年,进行了一些初步的观察,今介绍于后。 分布和为害情况 根据文献记载,我国东北、西北、华北、江浙各省均有发生。以东北、西北为害较重,在东北主要为害大麻和青麻,个别地区也为害苧麻和棉花。1957年,仅沈 Thyestilla geberi Fald. Is one of the major pests for hemp infestation. There is a lack of detailed account of this pest’s living habits in Northeast China. We made some preliminary observations in 1957-1958 and will be introduced later. Distribution and damage According to the literature, China’s northeast, northwest, north China, Jiangsu and Zhejiang provinces have occurred. To the northeast and northwest heavier damage, mainly in the northeast of marijuana and green linen, ramie and cotton damage in some areas. In 1957, only Shen