The Panel on Plant Health performed a pest categorisation of and , two well-defined insect species in the family Curculionidae, subfamily Scolytinae (Insecta: Coleoptera). They can be identified using taxonomic keys. is present in parts of Canada and the USA, and is present in parts of the USA, Guatemala, Honduras and Mexico. The main host plants of the two species are spp., but they also attack several other genera. The two species mostly colonise weakened or dead branches but can also attack the stems. They are mostly secondary pests but they vector the oak wilt fungus, , which causes heavy damage in American spp. populations. The fungus is mainly transmitted by the young adults during their maturation feeding on twigs, leaf petioles and young acorn stems. The beetles are polygamous and have two generations per year in most of their range. The main pathways are wood, bark, plants for planting, cut branches, chips and wood waste. These pathways are fully or partly regulated for the genera , and . However, the pathways are not regulated for the following genera: , , , . and meet all the criteria assessed by EFSA for consideration as potential Union quarantine pest. The criteria for considering and as potential Union regulated non-quarantine pests are not met since neither species are known to be present in the EU.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7009243 | PMC |
http://dx.doi.org/10.2903/j.efsa.2019.5513 | DOI Listing |
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