Arthropods from region Northwestern Ontario (Northern Ontario, Ontario, Canada) Arachnida Lamarck, 1801 Arachnids | 38 82 96 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 10 20 32 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 1 1 1 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 3 5 5 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 7 12 10 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 312 1718 2457 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 32 38 49 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 11 21 27 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 21 43 38 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 18 25 5 | Families Genera Species | Taxom
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