Appendix S1. Criteria for selecting sequences, methods for the construction of constraint trees, GenBank accession numbers of COI sequences used, raw ecological data used for phylogenetic independent contrasts, and a figure of one phylogeny used.

Appendix S2. Results from raw data incorporating four measurements of exotic host use and results from phylogenetic independent contrasts using multiple phylogenies for comparison.

Figure S1. A phylogenetic tree used in calculating phylogenetic independent contrasts.

Table S1. Geographic ranges, host plant range (native and exotic), and accession numbers for sequences used in the study.

Table S2. Results from analyses using number of species, number of genera, and the following indices: species multiplied by genera (taxonomic index 1), and genera multiplied by families (taxonomic index 2) as units quantifying exotic host plant use.

Table S3. Phylogenetic independent contrast results from the three phylogenies analyzed with number of exotic species and number of exotic genera used as separate response variables.

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