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Orconectes
''Orconectes'' is a genus of freshwater crayfish, native to the eastern United States. It includes the rusty crayfish, an invasive species in North America, and ''Orconectes limosus'', an invasive species in Europe. ==Taxonomy== The genus ''Orconectes'' was erected in 1872 by Edward Drinker Cope to house ''Astacus pellucidus'' (now ''Orconectes pellucidus'') and his new species, ''Orconectes inermis''. Approximately 85 species are known, divided into 11 subgenera.
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