Arthropods from region Holland (Hampden County, Massachusetts, USA) Arachnida Lamarck, 1801 Arachnids | 1 1 1 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 1 1 1 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 3 4 5 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 7 11 9 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 33 50 52 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 19 21 20 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 1 1 1 | Families Genera Species | Taxom
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