Data assembly
Across their natural and expanded host and geographical ranges, we found reports of 9901 infected host specimens and 473 different host-parasite interactions in 166 publications. The resulting species network comprises 141 host and 142 parasite species (described and undescribed with 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 different clustering algorithms (Appendix S3) produced similar topologies (CADM, Kendall’s W = 0.66, χ² = 34944, p < 0.01). The BI consensus tree topology showed no deviation from recent phylogenetic hypotheses likely to affect downstream analyses (see discussion in Appendix S1.1).