In the Toba Highlands of North Sumatra (Indonesia), coffee production (Coffea arabica L. var. Sigarar Utang) is an important outcome for smallholders; however, the attack of the coffee berry borer (CBB) Hypothenemus hampei, is an obstacle for the development of coffee cultivation in this area. This pest causes great economic losses produced by the development of its offspring inside the coffee berries, making it difficult to control. This concerning situation has led us to consider the development of a CBB control strategy, but beforehand, it was necessary to acquire key information on the phenology of the coffee tree and its implication on the bioecology of the pest. Thus, two study designs were set up, one comprising six plots with two different age classes and the other corresponding to a single plot dedicated only to the study of short distance dispersal of CBB. Part of this study focused on the phenology of the coffee trees and showed that berry production mainly takes place in the upper parts of the trees and significantly decreases with tree age. Due to the equatorial climate, berries were practically always present. Berries were produced following two major flowering periods and some minor ones distributed over the year, and harvested at regular intervals. Berry distribution on the branches varied over time. Dynamics of infestations by CBB showed that ripe berries were more infested than unripe berries because they had been exposed longer to CBB attacks, that older trees were more exposed than younger trees and that infestation was evenly distributed along branches. In addition, internode pedestrian dispersal of CBBs was shown to occur, but considerably less frequently than airborne dispersal. In conclusion, it appears that in the agro-climatic context of the Toba region, the virtual year-round presence of berries - which fosters CBB infestations and CBB short-distance dispersal - is a constraint that must be taken into consideration for designing future pest management measures. To this end, it will be necessary in particular to evaluate the potential of trapping mainly used in tropical areas and to put into practice the sanitation harvesting applied in other countries.

在北苏门答腊（印度尼西亚）的多巴高地，咖啡生产（阿拉伯咖啡L. var。Sigarar Utang）对小农来说是重要的成果。但是，咖啡果蛀虫（CBB）Hypothenemus hampei的袭击，是该地区咖啡种植发展的障碍。这种有害生物因其后代在咖啡浆果内部的发育而造成巨大的经济损失，使其难以控制。这种令人担忧的情况使我们考虑了CBB控制策略的发展，但是在此之前，有必要获取有关咖啡树物候及其对害虫生物生态学意义的关键信息。因此，建立了两个研究设计，一个包含六个具有两个不同年龄类别的地块，另一个对应于仅用于研究CBB的短距离分散的单个地块。这项研究的一部分集中在咖啡树的物候上，并表明浆果的生产主要发生在咖啡树的上部，并且随着树龄的增长而显着下降。由于赤道气候，浆果几乎总是存在。浆果在两个主要的开花期后产生，一年中分布一些次要的浆果，并定期收获。浆果在树枝上的分布随时间变化。CBB的侵染动态显示，成熟浆果比未成熟浆果受到更多的侵扰，因为它们受到CBB攻击的时间更长，老树比年轻树更容易受到侵害，并且侵害沿树枝平均分布。此外，CBB的节点间行人散布已发生，但比空中传播散布的频率要低得多。总之，在多巴地区的农业气候环境中，浆果的全年虚拟存在-促进了CBB侵染和CBB短距离扩散-是设计未来害虫管理措施时必须考虑的限制因素。为此，尤其有必要评估主要用于热带地区的诱集潜力，并将在其他国家采用的卫生收集措施付诸实践。