Color Rays

Alasmidonta heterodondwarf wedgemussel

Alasmidonta heterodon
dwarf wedgemussel


Leptodea ochraceatidewater mucket

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.
Alasmidonta undulatatriangle floater 

Alasmidonta undulata
triangle floater 


Lampsilis radiataeastern lampmussel

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.