Maximum likelihood (ML) tree of the combined analysis from six genes (COI, 16S, 18S, 28S, H3, CytB) aligned with MAFFT and then concatenated. Numbers next to nodes are ML bootstrap percentages from RAxML, Bayesian inference (BI) posterior probability, and maximum parsimony (MP) jackknife support values, separated by slashes. Key: * indicates 95% bootstrap/jackknife or greater and 0.95 posterior probability or greater. – indicates the node was not found. Branchiae drawings at terminals indicate presence of arborescent or plicate branchiae; ~ indicates that on segments with two groups of branchiae, the position in T. branchiata is split into anterior and posterior groups, as opposed to upper and lower groups in remaining taxa. The seven paraphyletic groups of Branchinotogluma are highlighted in a yellow-orange gradient.