Arthropods from region Stafford County (Virginia, USA) Arachnida Lamarck, 1801 Arachnids | 11 13 12 | Families Genera Species | Taxom
| Cephalocarida Sanders, 1955 Cephalocarids, Horseshoe shrimps | 1 1 1 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 3 6 6 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 90 205 242 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 31 40 44 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 9 12 13 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 1 1 1 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 2 2 0 | Families Genera Species | Taxom
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