Pink Mucket - Lampsilis abrupta


Federal Status: Endangered  (Watters 1995)

Ohio Status: Endangered (Watters 1995)

Key characteristics: A rounded to slightly elongate shell, thick, inflated, smooth, and yellowish brown; posterior end bluntly pointed in males, truncated in females (Cummings, Mayer 1992).

Similar species: Higgins eye, mucket, fatmucket, plain pocketbook, hickorynut (Cummings, Mayer 1992).

Description: Shell round to elliptical, solid, and inflated. Anterior end rounded, posterior end bluntly pointed in males, truncated in females. Dorsal margin straight, ventral margin straight to slightly curved. Umbos turned forward and elevated above the hinge line. Beak sculpture, if visible, of three or four double-looped ridges. Shell smooth, yellow or yellowish green and rayless or with faint green rays. Length to 4 inches (10.2 cm) (Cummings, Mayer 1992).

Pseudocardinal teeth triangular, thick, divergent; two in the left valve, one in the right, occasionally with a smaller tubercular tooth in front. Lateral teeth short, heavy, and relatively thick. Beak cavity deep. Nacre pink or white, iridescent posteriorly.

Hosts: None reported (Watters 1995)

Habitat: The lower Mississippi and Ohio rivers and their larger tributaries in gravel or sand (Cummings, Mayer 1992).

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