Redbay Ambrosia beetle

laurel wilt
Xyleborus glabratus
Last updated by:

Faith Campbell

Together, the redbay ambrosia beetle Xyleborus glabratus and associated fungus Harringtonia lauricola comprise the disease complex known as laurel wilt.

USFS scientists and managers developed a conservation priority-setting framework for forest tree species at risk from pest & pathogens and other threats. The Project CAPTURE (Conservation Assessment and Prioritization of Forest Trees Under Risk of Extirpation) uses FIA data and expert opinion to group tree species under threat by non-native pests into vulnerability classes and specify appropriate management and conservation strategies. The scientists prioritized 419 tree species native to the North American continent. The analysis identified 15 taxonomic groups requiring the most immediate conservation intervention because of the tree species’ exposure to an extrinsic threat, their sensitivity to the threat, and their ability to adapt to it. Each of these 15 most vulnerable species, and several additional species, should be the focus of both a comprehensive gene conservation program and a genetic resistance screening and development effort.  Redbay is ranked among the five species most deserving of gene conservation and the development of resistance through breeding. The article does not mention other species vulnerable to laurel wilt, such as swamp bay.

To read the complete write up, please visit the laurel wilt page.


Potter, K.M., Escanferla, M.E., Jetton, R.M., Man, G., Crane, B.S., Prioritizing the conservation needs of US tree spp: Evaluating vulnerability to forest insect and disease threats, Global Ecology and Conservation (2019), doi: