Fig. 3From: Antennal transcriptome analysis of olfactory genes and characterizations of odorant binding proteins in two woodwasps, Sirex noctilio and Sirex nitobei (Hymenoptera: Siricidae)Candidate odorant binding proteins (OBPs) of Hymenoptera (purple), Diptera (green), Hemiptera (gray), Orthoptera (black) and Lepidoptera (orange) were included in a neighbor-joining phylogenetic tree. The PBP and GOBP lineages are labelled in yellow and orange, respectively. SnocOBPs and SnitOBPs are indicated with red and blue arrows, respectivelyBack to article page