Arthropods from region Idaho (West USA, USA) Arachnida Lamarck, 1801 Arachnids | 88 178 286 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 4 4 5 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 8 17 21 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 17 29 28 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 13 24 11 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 399 2793 6289 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 28 34 38 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 2 4 5 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 5 6 8 | Families Genera Species | Taxom
| Thylacocephala ♰ Pinna & al., 1982 Bivalve arthropods | 0 1 0 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 51 136 214 | Families Genera Species | Taxom
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