The number of species feeding on Pinus radiata that are native to each region and established (or not) outside their native range for non-negligible impact. Cosmopolitan species are excluded. Note, many of the native species from the SW Pacific are native to Australia but established in New Zealand – this is an example of a “Within” region establishment. Also note that some species are native to more than one biogeographic range, e.g., Palearctic species native to Europe and Asia, but this is not shown here. Note that the East Palearctic includes records from the Indo-Malayan region.