Data assembly
Across their natural and anthropogenically expanded host and geographical ranges, we found reports of 10529 infected host specimens and 477 different host-parasite interactions in 183 publications. The resulting species network comprises 144 host and 143 parasite species (including species not officially described yet, i.e. cheironyms). We assembled environmental and morphometric data for 133 and DNA sequence data for 117 host species (Appendix S1.1). Niche dendrograms resulting from the clustering algorithms (Appendix S3) were congruent (CADM, Kendall’s W = 0.66, χ² = 34944, p < 0.01). The BI host tree topology showed no deviation from recent phylogenetic hypotheses likely to affect downstream analyses (see discussion in Appendix S1.1).