The bacterium Xylella fastidiosa (Xf) is a major threat to European agriculture and notably to the olive and Citrus industry. It is transmitted by xylem-feeding insects, whose plant-feeding preferences still require investigation in European agroecosystems. Here we studied olive and clementine groves of the oriental plain of Corsica. Insect-vegetation type interaction networks for nymphs and adults of xylem-feeding insects were investigated three times a year during two years in and around crops. Networks were dominated by the Philaenus spumarius – Cistus monspeliensis interaction and were similar for olive and clementine groves, despite differences in plant communities of the ground vegetation and agricultural practices. To a lesser extent, Dittrichia viscosa was also a suitable feeding plant for P. spumarius, the main vector of Xf in Europe. Neophilaenus campestris was associated with grove ground vegetation, whereas Lepyronia coleoptrata and Aphrophora alni exhibited no or weak association with any of the target vegetation types. All species occurred on olive and clementine foliage in similar low abundance. Our results suggest that soil tillage in spring would be less efficient than in Italy to control P. spumarius. Instead, removing C. monspeliensis bushes from the close vicinity of groves could reduce risk of spread of Xf to crops. Finally, conserving D. viscosa in olive groves as a biological control strategy against the olive fruit fly is rather counter-productive as it maintains populations of P. spumarius under susceptible crops. Overall, our study shows that management strategies should be designed in relation to local insect-plant interaction networks that should be investigated in both cultivated areas and their immediate environment.

Xylella fastidiosa ( Xf )细菌是对欧洲农业的主要威胁，尤其是对橄榄和柑橘产业的威胁。它是由以木质部为食的昆虫传播的，它们的植物摄食偏好仍需要在欧洲农业生态系统中进行调查。在这里，我们研究了科西嘉东方平原的橄榄园和柑桔园。在农作物及其周围的两年期间，每年对以木质部为食的昆虫若虫和成虫的昆虫-植被类型相互作用网络进行 3 次调查。网络主要由Philaenus spumarius – Cistus monspeliensis尽管地面植被的植物群落和农业实践存在差异，但橄榄和柑桔树林的相互作用和相似。在较小程度上，Dittrichia viscosa也是欧洲Xf的主要载体P. spumarius的合适饲养植物。Neophilaenus campestris与林地地面植被有关，而Lepyronia coleoptrata和Aphrophora alni与任何目标植被类型没有或弱相关。所有物种都以相似的低丰度出现在橄榄和柑桔叶子上。我们的研究结果表明，春季土壤耕作对控制P. spumarius的效率低于意大利. 相反，从小树林附近移除C. monspeliensis灌木可以降低Xf传播到农作物的风险。最后，将D. viscosa保存在橄榄树林中作为针对橄榄果蝇的生物控制策略会适得其反，因为它会在易感作物下维持P. spumarius的种群。总体而言，我们的研究表明，管理策略的设计应与当地昆虫-植物相互作用网络相关，应在耕地及其直接环境中进行调查。