Cao Xiao-Lu, Yu Li, Wei Jian-Song, Tao Qiu-Hong, Lu Qian, Wei Wan-Xuan, Zheng Xia-Lin
Guangxi Key Lab of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi Univ, Nanning, China.
Nanning City Greening Project Management Centre, Nanning Institute of Landscape Sciences, Nanning, China.
Neotrop Entomol. 2025 Feb 11;54(1):36. doi: 10.1007/s13744-025-01249-7.
Bostrichid beetles are well-known pests of wood and wood products in the world. The Madagascar almond tree, Terminalia neotaliala Capuron (Myrtales: Combretaceae), is uniquely layered and has been introduced and cultivated across several continents, where it is commonly used in urban landscape projects. To assess the damage caused by bostrichid beetles to T. neotaliala, the damage status of T. neotaliala, the classification of bostrichid beetles, and their vertical distribution on host plants were investigated. The primary site of infestation by bostrichid beetles on T. neotaliala living trees was the lateral branches in the fields with the damage symptoms, including unseasonable yellowed leaves, branch breakage, or eventual death of the entire lateral branch. The total percentage of attacked plants was 9.53%. Significant positive correlations existed between the percentage of attacked plants and the diameter at breast height and crown width, but not with the tree height. The percentage of damage by bostrichid beetles to T. neotaliala reached level I and level II over the 2-year observation. A total of nine species from four genera of Bostrichidae infested the T. neotaliala, i.e., Sinoxylon eucerum Lesne, S. flabrarius Lesne, S. japonicum Lesne, S. mangiferae Chûjô, S. pygmaeum Lesne, S. tignarium Lesne, Xylocis tortilicornis Lesne, Xylodectes ornatus (Lesne), and Xylopsocus capucinus (Fabricius). There were no distinct differences in the total number of Bostrichidae species on different crown layers of T. neotaliala, and no significant correlations between the total number of species and individuals, and the number of individuals of each species and the measurements of plants (i.e., diameter at breast height, crown width, and tree height). Our findings provide essential information for the development, implementation and monitoring of effective control strategies against bostrichid beetles on T. neotaliala.
长蠹科甲虫是世界上著名的木材及木制品害虫。马达加斯加杏仁桉（Terminalia neotaliala Capuron，桃金娘目：使君子科）具有独特的分层结构，已被引入并种植于多个大洲，常用于城市景观项目。为评估长蠹科甲虫对马达加斯加杏仁桉造成的损害，对马达加斯加杏仁桉的损害状况、长蠹科甲虫的分类及其在寄主植物上的垂直分布进行了调查。长蠹科甲虫对田间活立木马达加斯加杏仁桉的主要侵染部位是侧枝，出现的损害症状包括叶片提前发黄、枝条折断或整个侧枝最终死亡。受侵害植株的总比例为9.53%。受侵害植株的比例与胸径和树冠宽度之间存在显著正相关，但与树高无关。在为期两年的观察中，长蠹科甲虫对马达加斯加杏仁桉的损害程度达到了I级和II级。共有来自长蠹科4个属的9个物种侵染了马达加斯加杏仁桉，即光滑新长蠹（Sinoxylon eucerum Lesne）、糙新长蠹（S. flabrarius Lesne）、日本新长蠹（S. japonicum Lesne）、芒果新长蠹（S. mangiferae Chûjô）、矮小新长蠹（S. pygmaeum Lesne）、粉蠹新长蠹（S. tignarium Lesne）、扭角木小蠹（Xylocis tortilicornis Lesne）、饰纹木蠹（Xylodectes ornatus (Lesne)）和卡普西木虱小蠹（Xylopsocus capucinus (Fabricius)）。在马达加斯加杏仁桉不同树冠层上，长蠹科物种总数没有明显差异，物种总数和个体数量、每个物种的个体数量与植株测量值（即胸径、树冠宽度和树高）之间也没有显著相关性。我们的研究结果为制定、实施和监测针对马达加斯加杏仁桉上长蠹科甲虫的有效防治策略提供了重要信息。
