Checklist for Subfamily Hydrachninae Piersig, 1896 and region Mercer County (Ohio, USA)
Class | Arachnida Lamarck, 1801 Arachnids | 51 93 86 | Families Genera Species | Taxom | Subclass | Micrura Ehrenberg, 1831
| 47 88 81 | Families Genera Species | Taxom | Infraclass | Acari Nitzsch, 1818 Mites and Ticks | 28 37 17 | Families Genera Species | Taxom | Superorder | Acariformes Zakhvatkin, 1952 Dust mites, Mites | 14 19 9 | Families Genera Species | Taxom | Order | Trombidiformes Reuter, 1909 Mites, Trombidiform mites | 11 16 7 | Families Genera Species | Taxom | Suborder | Prostigmata Kramer, 1877 True mites | 11 16 7 | Families Genera Species | Taxom | Infraorder | Parasitengonina Walter & al., 2009
| 4 5 1 | Families Genera Species | Taxom | Superfamily | Hydrachnoidea Leach, 1815
| 1 1 0 | Family Genus Species | Taxom | | Family | Hydrachnidae Leach, 1815
| 1 0 | Genus Species | Taxom | | Subfamily | Hydrachninae Piersig, 1896
| 1 0 | Genus Species | Taxom |
Genera for Mercer County (Ohio) 1 Genera with 0 Species Hydrachna O. F. Müller, 1776 | Water Mites | 0 | Species | Taxom |
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