Figure 2

Maximum likelihood tree of the chemosensory proteins (CSPs) predicted from the antennal transcriptome of R. palmarum and from several other species. Unrooted. Includes sequences from Agrilus planipennis (Apla), Anoplophora glabripennis (Agla), Dendroctonus ponderosae (Dpon), R. ferrugineus (Rfer), and Bombyx mori (Bmor). The best substitution model calculated and used corresponded to LG + G + I. Numbers at nodes represent bootstrap support (n = 100) and are only shown if ≥ 75. The coleopteran specific cluster is colored in orange. Sequence names of R. ferrugineus and R. palmarum have been colored in red and blue font, respectively.