Arthropods from region Northeast Spain (Spain) Arachnida Lamarck, 1801 Arachnids | 87 403 970 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 4 7 10 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 9 15 34 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 12 28 44 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 11 41 97 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 341 2770 5684 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 66 147 238 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 6 10 14 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 0 0 0 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 16 24 30 | Families Genera Species | Taxom
| Pauropoda Lubbock, 1868 Pauropodans, Pauropods, Progoneates | 0 0 0 | Families Genera Species | Taxom
| Pycnogonida Latreille, 1810 Pycnogonids, Sea Spider, Sea Spiders | 1 1 1 | Families Genera Species | Taxom
| Symphyla Ryder, 1880 Dwarf Centipedes, Pseudocentipedes, Symphylans, Symphylids | 1 3 4 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 34 78 52 | Families Genera Species | Taxom
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