Cylindrocopturus furnissi: an emerging pest of Douglas fir in the USA
Cylindrocopturus furnissi (Curculionidae: Conoderinae) was considered a minor pest in North America that infrequently caused twig disfigurement of Douglas fir (Pseudotsuga menziesii) in natural environments. However, since the late 2010s it has been reported as an emerging pest of Douglas-fir and true fir species (Abies procera and A. nordmanniana) in Christmas tree or conifer seedling production in the north-west USA. It is reported that even minor aesthetic damage from C. furnissi infestation can prevent export and significantly affect production of Christmas trees.
Sources
Whitney TD, Chastagner G (2024) Insecticide efficacy and emergence timing of the Douglas-fir twig weevil. Journal of Economic Entomology 117(3), 942-950. https://doi.org/10.1093/jee/toae048