The secondary structure model of the mitochondrial rRNAs from A. cinerea. The helix numbering system has been described [35], except for the variable region enclosed by Helix 47 in rrnS. Positions conserved among all sampled taxa of Orthoptera are circled in grey. The consensus sequence, relative frequency of nucleotides, and information content of selected helices are displayed by structure logos (height of a nucleotide symbol is proportional to its frequency; letter M indicates the amount of mutual information). Roman numerals specify domains I–IV. (a) rrnS (b) 5′ half of rrnL. (c) 3′ half of rrnL. See Figure 4 legend for explanation on base pair symbols and software used to construct structure diagrams.