Overview
- A peer-reviewed NC State paper published June 1, 2026 confirmed the longhorn beetle Prionus imbricornis as the species whose larvae are destroying blueberry roots in North Carolina.
- Scientists matched larvae to adults using pheromone-baited black panel traps at six farms and genetic barcoding that produced 98–99% sequence matches.
- Prionus imbricornis larvae feed underground on roots, can reach about five inches long, and may kill blueberry bushes while adults do not feed.
- There are currently no insecticides labeled for this pest on blueberries, so NC State researchers have begun trials to identify effective products and the best timing to limit larval establishment.
- The study includes an identification key, DNA barcodes, and a review of the beetle’s biology to help farmers and extension agents detect infestations and guide future management.