Mitochondrial gene arrangements of psyllids, aphids, and selected whitefly species all of which have a highly similar gene order. Genes are transcribed from left to right except for the underlined genes which are transcribed in the opposite direction. Dot in box indicates a putative origin of replication and/or a region of direct repeats. Empty box indicates 40–60 nt that do not code for a readily identifiable tRNA. Horizontal bar between genes indicates that they are contiguous with little or no nucleotides between them. The change in the position of tRNA-G in T. vaporariorum is traced by lines and the 5X preceding the box containing tRNA-S2, indicates that this putative tRNA is present five time in a direct repeat.