Maximum-likelihood (10000 bootstrap repeats) and Bayesian inference (100,000 generations) trees showing phylogenetic relationships between Monomorium brachypterum and M. intrudens based on 658 bp mitochondrial COI sequences. Two Monomorium species were used as the outgroups. The phylogenetic tree shown is based on the maximum-likelihood tree. The numbers above the branches indicate maximum-likelihood bootstrap support (left) and Bayesian inference posterior probability (right). Original sequences and trees are available in Suppl. materials 3–5.