Phylogenetic tree of E. jankowskii recovered by maximum likelihood analysis. Bootstrap support and posterior probabilities are shown only for nodes highly supported by at least two phylogenetic reconstruction methods (i.e., ≥ 60% maximum likelihood, maximum parsimony or neighbor-joining bootstrap support or ≥ 0.60 Bayesian posterior probability). Outgroups (obtained from GenBank) are indicated by their species names. Colored squares represent different populations. Details of the populations are given in the text