Fig. 4

Phylogenetic relationship of octopamine and tyramine receptors in small hive beetle, Aethina tumida (green), red flour beetle, Tribolium castaneum (red), honey bee, Apis mellifera (black), fruit fly, Drosophila melanogaster (blue), and silk worm, Bombyx mori (purple). Genbank accession numbers for the sequences mentioned in this figure can be found in Additional file 1: Table S1