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Preventing invasions of Asian longhorn beetle and citrus longhorn beetle: are we on the right track?


Two Asian longhorn beetles, Anoplophora glabripennis and Anoplophora chinensis, are among the most serious alien invasive species attacking forest and urban trees, both in North America and Europe. Major efforts have been put into preventing further entry and establishment of the two species as well as promoting their successful eradication. Here, we review these efforts, their progress and outcome, and scientific advancements in monitoring and control methods. The combined international activities and harmonizing legislative changes in detection and eradication methods have proven worthwhile, with more than 45% of eradication programmes successful in the last 12 years. Some countries were able to completely eradicate all populations and others managed to reduce the area affected. Although the costs of the eradication programmes can be very high, the benefits outweigh inaction. Attempts to eradicate A. chinensis have been more challenging in comparison with those targeting A. glabripennis. For both species, efforts are hampered by the ongoing arrival of new beetles, both from their native regions in Asia and from other invaded regions via bridgehead effects. The methods used for eradication have not changed much during the last decade, and host removal is still the method most commonly used. On the other hand, detection methods have diversified during the last decade with advances in semiochemical research and use of detection dogs. The next decade will determine if eradications continue to be successful, particularly in the case of A. chinensis, which has been targeted in some countries for containment instead of eradication.

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The datasets generated and analysed during the current study are available within the article and its supplementary materials.


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We thank Françoise Petter for providing Anoplophora spp. interception data for Europe, and USDA-APHIS and CFIA for interception data for North America. This work was partially supported by the National Socio-Environmental Synthesis Center (SESYNC) under funding received from the National Science Foundation DBI-1639145. Both S. Branco and M. Branco are partially supported by CEF, a research unit funded by Foundation for Science and Technology (FCT), Portugal (UID/AGR/00239/2019 and (UIDB/00239/2020). M. Faccoli was partially funded by the DOR program of the University of Padua.


This study was supported by the HOMED project (, which received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 771271.

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Correspondence to Sofia Branco.

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This study does not contain any experiments using any animal species that require ethical approval.

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Communicated by Jian Duan.

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Branco, S., Faccoli, M., Brockerhoff, E.G. et al. Preventing invasions of Asian longhorn beetle and citrus longhorn beetle: are we on the right track?. J Pest Sci 95, 41–66 (2022).

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  • Biological invasions
  • Anoplophora spp.
  • Eradication
  • Management strategies
  • Pest detection
  • Surveillance