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Pink
Mucket, Lampsilis
abrupta
The pink mucket is a
federally endangered mussel. The
shell is round, solid and inflated. The
anterior end is rounded and the posterior end is pointed in males and
truncated in females. The
umbos are turned forward and elevated above the hinge line.
The beak sculpture, if visible, is made of three or four
double-looped ridges. The
shell is smooth, yellow or yellowish green and rayless or with faint green
rays. The length of the shell can be up to four inches.
The pseudocardinal teeth of the mucket are triangular and thick and
the lateral teeth are short, heavy, and thick.
The beak cavity is deep and the nacre is pink or white.
The pink mucket is found on the lower Mississippi and Ohio rivers
and their larger tributaries in gravel or sand.
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