Figure 4. Effects of climatic, geographic and phylogenetic distance of non-native host trees to their native congeners on abundance, diversity and species richness of phytophagous (green dots) vs. non-phytophagous (purple dots) insects (Heteroptera and Coleoptera). Depicted are R2-values of linear models where the different tree genera and insect taxa (i.e. beetles or true bugs) were accounted for as co-variables [biodiversity ~ distance * host-tree-genera * insect-taxa (i.e. Coleoptera/Heteroptera) + RDA1]. Details on the feeding guilds summarized under phytophagous and non-phytophagous are given in the methods section.