Thoracotremata is a group of Brachyura, with 1,248 extant species. To date, parts the thoracotreme phylogeny are not yet resolved and require further investigation . In this study, 12 new mitogenomes from four superfamilies were sequenced. They contain standard set 37 genes, vary in size 15,422 ( Hapalocarcinus marsupialis Stimpson, 1858 sensu lato ) to 16,490 bp [ Arcotheres sinensis (Shen, 19...