Arthropods from region Halden (Østfold, Norway) Arachnida Lamarck, 1801 Arachnids | 34 113 157 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 8 24 31 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 3 5 9 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 8 15 18 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 8 32 58 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 222 1194 1918 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 17 17 17 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 5 10 14 | Families Genera Species | Taxom
| Symphyla Ryder, 1880 Dwarf Centipedes, Pseudocentipedes, Symphylans, Symphylids | 1 1 0 | Families Genera Species | Taxom
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