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对桉树枝瘿姬小蜂的鉴别特征和危害症状进行描述。测定结果桉树枝瘿姬小蜂种群为聚集分布,空间分布型为负二项分布,在树干和侧枝上的种群聚集度大于叶片,树干和侧枝上的种群扩散系数C、负二项分布k值、扩散指数I§、平均拥挤度m*、L指数(个体群的平均大小)分别为46.206 5,0.281 1,3.529 4,57.913 4和58.911 1,叶片上则分别为7.040 1,0.994 9,1.999 6,9.057 4和7.050 0。虫瘿平均长度0.32 cm,平均宽度0.22 cm,平均大小0.090 1 cm2。虫瘿数量和羽化孔数量主要分布在树冠枝条的上层;不同无性系桉树上的虫瘿数量在不同部位上存在差异,广林9主要危害枝条、巨桉主要危害叶片;在叶片的虫瘿数量差异上,广林9主要危害叶柄,巨桉则同时危害叶柄和中脉;已发现桉树枝瘿姬小蜂的天敌寄生蜂——长尾金小蜂。
Identification of eucalyptus and its harmful effects were described. The results showed that the populations of Elaeagnus molitor were clustered and their spatial distribution was negative binomial. The clustering degree of the population on the trunk and side branches was greater than the population diffusion coefficient C on the leaves, trunk and side branches, and the negative binomial distribution k , Diffusion index (I§), average crowding degree (m *) and L index (average size of individual population) were 46.206 5,0.281 1,3.529 4,57.913 4 and 58.911 1, respectively, while those on leaves were 7.040, 0.994 9 and 1.999 6,9.057 4 and 7.050 0. Insects 瘿 average length of 0.32 cm, the average width of 0.22 cm, with an average size of 0.090 1 cm2. The number of insects and the number of eclosion holes are mainly distributed in the upper branches of the crown; the number of insects on different clones of eucalyptus in different parts of the differences exist, Guanglin 9 main damage to branches, the main damage to the leaves of giant eucalyptus; the number of insects Differences, Guanglin 9 major petiole, giant eucalyptus at the same time jeopardize the petiole and midrib; Eucalyptus has been found Buchs small bee natural enemies parasitic bees - long tail gold wasps.