Phylogenetic reconstruction of Ravenelia species on different Vachellia hosts A Maximum likelihood tree with 1000 bootstrap repeats based on combined nrITS and LSU rDNA sequence data. Bootstrap values below 75 are not shown. Three highly supported groups represent R. evansii, R. macowaniana and R. xanthophloeae sp. nov., respectively. Specimens that originated from formerly unreported host species are highlighted in bold B Parsimony network analysis based on the same dataset as in the ML-analysis. Each line represents one base substitution while small circles represent intermediate but missing sequences. Numbers next to lines indicate the positions of the substitutions in the alignment. Sequences in rectangular boxes were inferred as ancestral by this analysis.