Arthropods from region Spain (Iberian Peninsula) Arachnida Lamarck, 1801 Arachnids | 283 1246 4160 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 20 43 92 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 10 32 169 | Families Genera Species | Taxom
| Dinocaridida Collins, 1996 Wedgeheads | 0 1 2 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 39 124 390 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 25 141 422 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 679 9809 32121 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 290 895 2138 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 105 278 634 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 3 3 3 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 66 241 327 | Families Genera Species | Taxom
| Pauropoda Lubbock, 1868 Pauropodans, Pauropods, Progoneates | 1 1 3 | Families Genera Species | Taxom
| Pycnogonida Latreille, 1810 Pycnogonids, Sea Spider, Sea Spiders | 11 19 45 | Families Genera Species | Taxom
| Remipedia Yager, 1981 Cave-dwelling crustaceans, Remipedes | 2 2 4 | Families Genera Species | Taxom
| Symphyla Ryder, 1880 Dwarf Centipedes, Pseudocentipedes, Symphylans, Symphylids | 2 4 5 | Families Genera Species | Taxom
| Thylacocephala ♰ Pinna & al., 1982 Bivalve arthropods | 0 1 1 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 73 248 211 | Families Genera Species | Taxom
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