Native and non-native insect herbivores associated with native and non-native European trees

We compiled a list of all native and non-native insect species known to feed on 77 tree species in Europe. For each tree species, a list of insects known to utilize that species as a host was compiled using a variety of sources. The resulting list consists of 7,598 tree species -insect species pairs. Each insect was researched to determine its taxonomic groupings, feeding guild (gall-maker, folivore, reproductive plant feeder, sap-feeder, or phloem/wood-borer), and whether it was native to Europe or non-native.