- Range:
Blue = current range
Hollow circles = former range
- Status in Kansas:
Extirpated
- North American Status:
(From NatureServe)
Museum records indicate
that this species was distributed throughout a considerable portion of the Interior Basin:
Ohio and Sciota rivers (Ohio), Wabash and White rivers (Indiana), Sangamon River
(Illinois), Tennessee and Duck rivers (Tennessee), St. Croix and Wisconsin rivers
(Wisconsin), Cedar, Iowa, Mississippi, and Racoon rivers (Iowa), Little Fox River
(Missouri), and Fall and Neosho rivers (Kansas). Records from the Kiamichi River,
Oklahoma, were previously considered uncertain but were confirmed in 2003. The only
remaining populations are in a short section of the lower St. Croix River along the
Minnesota/Wisconsin border, the Kiamichi River in Oklahoma and the Ouachita River in
Arkansas. This species is imminently threatened with extinction.
- Comments:
This mussel, largely similar to the mapleleaf, differs in having a straight dorsal
edge and a pronounced wing sculpted with coarse corrugations. Internally, the nacre is
white and the lateral teeth are long, straight and parallel to the dorsal margin. Careful
examination of a live shell will reveal the mantle edge has a black margin. This species
no longer exists in Kansas and has critically declined across its once broad range within
the Mississippi River basin to the extent it is now listed as federally endangered. Old
shells have been found across eastern Kansas where it evidently once occurred in rivers
and large creeks.
- Fish Hosts:
channel catfish and blue catfish
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