Arthropods from region Buenos Aires (Northeast Argentina, Argentina) Arachnida Lamarck, 1801 Arachnids | 105 414 639 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 7 8 9 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 5 9 10 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 13 16 17 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 3 4 5 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 388 4166 6001 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 104 182 220 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 33 57 82 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 9 17 13 | Families Genera Species | Taxom
| Pycnogonida Latreille, 1810 Pycnogonids, Sea Spider, Sea Spiders | 5 6 7 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 2 2 2 | Families Genera Species | Taxom
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