Fig 3.

Schematic representation of mitochondrial gene arrangements in Araneae species compared to the putative ancestral arthropod gene order. Underlined protein coding genes and tRNAs are encoded in the minor strand. Genes that changed the positions were marked by numbers below, and the numbers refer to putative rearrangement events as follows: ①Translocation of trnL2; ②Translocation of trnN; ③Translocation of trnS1; ④Translocation of trnQ; ⑤Inversion between trnY and trnC; ⑥Reverse translocation of trnI; ⑦Translocation of trnI; ⑧Translocation of trnW; ⑨Translocation of trnG; ⑩Translocation of trnM.