Phylogenetic tree inferred by concatenation of the three loci under study. The phylogram was obtained by a partitioned ML analysis with a GTR (general time reversible) + Γ (gamma distribution of rates with four rate categories) + I (proportion of invariant sites) model using RAxML software [39]. The tree was visualized using the TreeDyn program, version 198.3 [7]. The percentages above the branches are the frequencies with which a given branch appeared in 500 bootstrap replications. Only bootstrap values higher than 50% on branches are shown. Concatenated sequences of Ph. sergenti were used as the outgroup.