Arthropods from region Groton (New London County, Connecticut, USA) Arachnida Lamarck, 1801 Arachnids | 6 6 6 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 1 1 1 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 54 404 622 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 17 21 23 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 4 5 5 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 1 1 1 | Families Genera Species | Taxom
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