Arkansia is a monotypic genus[2] of freshwater mussels in the family Unionidae, the river mussels. The sole species in the genus is Arkansia wheeleri. Its common names are the Ouachita rock pocketbook and Wheeler's pearly mussel.[1] The genus was named for the state of Arkansas, where the mussel was first discovered.[2] This is a federally listed endangered species of the United States.[3]
Distribution
This species is native to Arkansas, Oklahoma, and Texas in the United States, which have only four or five small, isolated populations.[4] Of the remaining populations, only the one located in the Kiamichi River in Oklahoma is viable.[4]
Description
This mussel is not sexually dimorphic; the sexes appear the same. The shell is somewhat rounded or oval, up to 11.2 centimeters long by 6 wide by 8.7 high. The shell is brown or black, lustrous and iridescent. The nacre is part pink and part white or bluish.[2]
References
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^ a b Cummings, K. & Cordeiro, J. (2011). "Arcidens wheeleri". The IUCN Red List of Threatened Species. IUCN. 2011: e.T2114A9250119. doi:10.2305/IUCN.UK.2011-2.RLTS.T2114A9250119.en. Retrieved 10 January 2018..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
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^ a b c USFWS. Arkansia wheeleri Recovery Plan. March 2004.
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^ USFWS. Final rule to list the Ouachita rock-pocketbook (mussel) as an endangered species. Federal Register October 23, 1991.
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^ a b Arkansia wheeleri. The Nature Conservancy.
This Unionidae-related article is a stub. You can help Wikipedia by expanding it. 
This Unionidae-related article is a stub. You can help Wikipedia by expanding it. 