Table 2 in Christmas beetles (Anoplognathus spp., Coleoptera: Scarabaeidae) mistake peppercorn trees for eucalypts

Table 2. Compositions of monoterpenes in Schinus molle and species of Eucalyptus. Speciesa -Pinenea -PhellandreneLimoneneb -PhellandreneCymene1,8-CineoleTotal oilS. molle ⸸3.027.67.47.91.200.4E. conica (resistant)8.505.70067.31.3E. conica (susceptible)2.411.70.731.103.20.8E. melliodora (resistant)7.9070073.21.8E. melliodora (susceptible)11.028.61.41.43.320.10.8 ⸸Foliage was collected from mature trees (n =9) within the Australian Capital Territory. Leaves were harvested from two locations on each tree, placed in sealed plastic bags and kept on ice for return to the laboratory. Foliage samples were stored at - 20 ° C until required. Leaves were assayed for monoterpenes using gas chromatography as outlined in Edwards et al. (1993). Individual terpenes listed as percentage of total terpene extract; total percentage oil based on leaf fresh weight. Data for E. conica and E. melliodora taken from Edwards et al. (1993) with the permission of the authors.表2 秘鲁胡椒木（Schinus molle）与桉属（Eucalyptus）物种的单萜类化合物组成 物种 α-蒎烯（α-Pinene） β-水芹烯（β-Phellandrene） 柠檬烯（Limonene） γ-水芹烯（γ-Phellandrene） 伞花烃（Cymene） 1,8-桉叶素（1,8-Cineole） 总精油 秘鲁胡椒木（Schinus molle）⸸ 3.0 27.6 7.4 7.9 1.2 0 0.4 圆锥桉（Eucalyptus conica，抗性种群） 8.5 0 5.7 0 0 67.3 1.3 圆锥桉（Eucalyptus conica，感性种群） 2.4 11.7 0.7 3.1 1.1 0 3.2 0.8 蜜味桉（Eucalyptus melliodora，抗性种群） 7.9 0 7.0 0 0 73.2 1.8 蜜味桉（Eucalyptus melliodora，感性种群） 11.0 28.6 1.4 1.4 3.3 20.1 0.8 ⸸ 样本采自澳大利亚首都领地内的9株成熟植株（n=9）：从每株树的两个不同位置采集叶片，装入密封塑料袋后置于冰上运回实验室，叶片样品保存于-20℃直至实验开展。采用气相色谱（gas chromatography）按照Edwards等人（1993）所述方法检测叶片中的单萜类化合物。所列各萜类化合物占总萜提取物的百分比，总精油百分比基于叶片鲜重计算。 圆锥桉与蜜味桉的相关数据取自Edwards等人（1993）的研究，已获得作者授权。