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''Xysticus ferox'', the brown crab spider, is a species of 
crab spider
The Thomisidae are a family of spiders, including about 170 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other families of spiders. Many members of th ...
in the family Thomisidae. It is found in the USA and Canada.
References
Further reading
* * * Thomisidae Spiders described in 1847 {{thomisidae-stub