剪枝栗实象Gryllorhynobites ursulus Roelofs是板栗果实生长期的重要害虫。它主要为害未成熟的栗苞,成虫在产卵时,有咬断产卵果枝的习性,使果实未成熟而提前落果。受害树一般引起减产30-50%,重者可达70%以上,甚至颗粒无收。产区群众说;“开始挂苞一大片,成熟采收果不见”。1984-1986年,作者在京山县板栗产区对剪枝栗实象进行了研究。根据研究结果,本文对前人关于该虫形态特征、生物学特性记述失真欠详之处作了补充。同时,对该虫的防治技术也作了新的探索。一、形态特征成虫体长5-8mm,黑色具兰色金属光泽。全身密被黑而长的刚毛及白色的短绒毛。头部具有环状皱纹;复眼棕黑色、喙管长4-5mm,宽而扁有纵脊,在中央部分缢缩;触 Glimpse of the chestnuts Gryllorhynobites ursulus Roelofs is an important pest of the chestnut fruit growing season. It is mainly harmful immature chest bud, adult eggs in the spawning, oviparous spawning habits, so that the fruit immature and early drop fruit. Tree damage caused by 30-50% of the general cut, heavy up to 70% or more, and even crop failure. The masses in the producing areas said: “The beginning of a large hanging bud, ripe fruit harvest not seen.” 1984-1986, the author in Jingshan County chestnut producing areas on the chestnut real image were studied. According to the research results, this paper complements the predecessors’ deficiencies in describing morphological and biological characteristics of the insect. At the same time, the worm prevention and control technology also made a new exploration. First, morphological characteristics Adult body length 5-8mm, black with blue metallic luster. Whole body is black and long bristles and white fleece. Head with annular wrinkles; compound eyes brown, beak tube length 4-5mm, wide and flat with longitudinal ridges, constricted in the central part; touch