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Family Pisauridae - Nursery Web Spiders

Very large spider - Dolomedes tenebrosus Large aquatic spider; Dolomedes mbe - Dolomedes triton 20140830.Brown.Gray.Spider.NM.jpg - Pisaurina mira a spider - Pisaurina mira Pisaurina mira? - Pisaurina mira unknown spider - Dolomedes vittatus Fishing Spider Possibly?? - Dolomedes tenebrosus tall spider - Dolomedes albineus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Pisauridae (Nursery Web Spiders)
Other Common Names
Fishing spiders
Explanation of Names
Named after palearctic genus Pisaura. That genus is likely named after the Pisaurus River (now the Foglia), or Pesaro region of Italy (Wikipedia: Marche region, Pesaro).
Identification
Often large spiders, similar to wolf spiders (Lycosidae). Note the following:
typically rest with legs flattened on substrate
carry their egg sacs by means of their jaws and pedipalps (instead of attaching them to their spinnerets)
all eight eyes are approximately the same size, as opposed to wolf spiders (Lycosidae), where two eyes are more prominent

Arrangement of eyes in Dolomedes and Pisaurina:
  
Remarks
Spiders of the Eastern US by Howell and Jenkins states that Pisauridae contains three genera and thirteen species. We found those thirteen species in the World Spider Catalog and made guide pages for all those that were missing.
See Also
Wolf Spiders, Lycosidae
Print References
Howell and Jenkins (1)
Internet References
Wikipedia: Nursery web spider
Species list here
Works Cited
1.Spiders of the Eastern US, A Photographic Guide
W. Mike Howell and Ronald L. Jenkins. 2004. pearson education.