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槲柞茎蜂(Janus sp)属于膜翅目茎蜂科。主要为害槲柞春发新梢,造成大量新梢死亡,影响槲柞的生长和放养柞蚕。笔者从1962和1979～1981年对其进行了观察和研究。一、发生、为害与寄主此虫在辽宁省槲柞分布区广泛发生,其中以凤城、宽甸、岫岩、东沟等县较重。1962年春在本所实验场调查,被害株率高达96%,平均新梢受害率为37.7%;1979年调查,槲柞受害率为80%,新梢受害率24.9%。此虫寄主较专一,到目前所知仅有槲柞(Quercus aliena B.)一种。二、形态概述(一)成虫雌虫体长15毫米,翅展24毫米。全体黑色,头大,光滑有光泽,顶面观呈三角形;复眼大,黑色,呈椭圆形;触角黑色
Janus sp belongs to the order Hymenoptera. The main damage mistletoe spring hair shoots, resulting in a large number of shoot death, affecting the growth of oak oak and stocking tussah. The author from 1962 and 1979 to 1981 were observed and studied. First, the occurrence, damage and host The worm occurred in Liaoning Province Querce oak widespread occurrence, of which Fengcheng, Kuandian, Xiuyan, Donggou counties heavier. In the spring of 1962, a total of 96% of the victims were killed and 37.7% of the victims were killed in the laboratory in our institute. In 1979, the damage rate of the oak trees was 80% and that of the new shoots was 24.9%. This worm host more specific, so far only known to Quercus aliena (Quercus aliena B.) a. Second, the morphological overview (a) adult female body length 15 mm, wingspan 24 mm. All black, big head, smooth and shiny, the top view of the triangle; complex eyes large, black, oval; antenna black