Arthropods from region Willow (Ulster County, New York, USA) Arachnida Lamarck, 1801 Arachnids | 11 17 19 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 1 1 1 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 1 1 0 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 65 119 107 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 2 2 3 | Families Genera Species | Taxom
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