Fig. 1

Phylogenetic hypotheses for Amblyomma relationships based on the mitogenomic datasets. Two matrices were assessed using the coding protein genes at amino acid codification (AA) and at nucleotide codification (NT; this last includes both ribosomal genes). Trees were reconstructed using maximum-likelihood (ML) and Bayesian inference (BI) applying 6 treatments to each matrix (these are described in the left top of the figure and in section Methods section). Circles (left of tree) refer to the credibility support of the nodes, with the black-gilled circle indicating strong support; the gray-filled circle, moderate support; and the open circle, no significant support (at the left middle of figure). All trees were summarized based on the following criteria. If in at least half of the trees a given node is not recovered with significant statistical support (node ≥ 0.95 PP/80 PB), it is collapsed (see all topologies in Additional file 1: Fig. S1a–l). Black-filled circles at a given node indicate nodes with maximum bootstrap and PB values across the 12 inferences. The geographical distribution of the species included in the tree are indicated with color coding in their respective branches, as is described in the lets button. The scale bar is given in expected substitutions/site. The specimens sequenced in this study are highlighted in bold font, and species with the same subgeneric status are indicated in the same color. The lineage with Indomalayan, Afrotropical and Australasian distributions is indicated in the tree with IAA