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The topology is derived from the ML tree of Figure 1. Pie charts indicate the relative likelihoods at respective nodes (A–L). Terminal taxa and their respective branches are color-coded for state of host use. The scale is a nucleotide substitution rate of 0.05. Palearctic, European+Nearctic, Palearctic+Nearctic, and cosmopolitan states were coded as multistate and thus do not appear in pie charts.
