Arthropods from region Inaccessible Island (Tristan da Cunha) Insecta Linnaeus, 1758 Insects, True insects | 7 10 11 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 23 34 41 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 10 11 13 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 1 1 1 | Families Genera Species | Taxom
| Pycnogonida Latreille, 1810 Pycnogonids, Sea Spider, Sea Spiders | 7 8 14 | Families Genera Species | Taxom
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