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 Use the links to navigate the hierarchy of invertebrate classification. 
  Family Pionidae 
Subfamily Pioninae 
    Genus Piona -- midwestern North America. 
    Genus Nautarachna -- North America. 
Taxon Information
The Subfamily Pioninae has been reported (or is assumed) to occur in fresh waters. This taxon has been reported from midwestern states of North America. 
(These statements were generated automatically from the WInvertebrates database.) 
Literature Records
	- Pioninae, [North America] (Smith et al., 2010).
  
Bibliography
   - Smith, I.M., D.R. Cook & B.P. Smith. 2010. Water mites (Hydrachnidiae) and other arachnids. [in] J.H. Thorp & A.P. Covich (eds.). Ecology and Classification of North American Freshwater Invertebrates, 3rd edition: 485-586.
 
 
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