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| Category for introns | Location of introns | Name of introns |
| Group I | cox1 | cox1 i1, cox1 i2, cox1 i3, cox1 i4, cox1 i5 |
| cox2 | cox2 i1 | |
| cox3 | cox3 i1 | |
| nad4 | nad4 i1 | |
| nad5 | nad5 i1, nad5 i2 | |
| rnl | rnl i1 | |
| rns | rns i1 | |
| Group II | cox1 | cox1 i6 |
