Locations of the OBP gene and pseudogene (Ψ) clusters in H. halys genome scaffolds. The location of each OBP gene is indicated by a horizontal line. Transcriptional directions are indicated by (+) for same direction as the scaffold or (-) for the opposite direction. NW_014466445.1 (2,775,865 bp) is the two terminal 750 k bp pieces, interconnected by a dashed line, which in one end has a cluster of OR genes with the gene obp36 entirely placed inside an OR gene intron. NW_014467401.1 (475,337 bp) illustrates the close proximity of obp13 to some OR genes. The 750 k bp terminal ends of scaffolds NW_014466452.1 (2,701,634 bp) and NW_014466586.1 (2,077,303 bp) are shown. The lengths of the other scaffolds are: NW_014466538.1 = 757,214 bp; NW_014466590.1 = 710,159 bp; NW_014467090.1 = 728,809 bp; NW_014467659.1 = 357,280 bp; and NW_014468285.1 = 196,245 bp. All scaffold representations are drawn to scale.