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Color Rays

A heterodon Silhouette Left

Alasmidonta heterodon
dwarf wedgemussel


L ochracea Full

Leptodea ochracea
tidewater mucket


Color rays when present may be valuable for identification. The arrangement and width of the rays is a diagnostic character for several species in our area.
A undulata Full

Alasmidonta undulata
triangle floater 


L radiata Silhouette Small

Lampsilis radiata
eastern lampmussel


The color rays are the darker green stripes or bands that are highlighted against the lighter yellow- green of the periostracum.

American Museum of Natural History

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