Mapleleaf Mussel (Quadrula quadrula)

The Mapleleaf shell is thick, quadrate in outline and ranges in colour from yellowish green through light brown to dark brown. Canadian specimens reach 125 mm in length, 100 mm in height and 50 mm in width. Interior of the shell is white with heavy hinge teeth.

This heavy shelled mussel that is shaped like a maple leaf, is still alive in small areas of watersheds dominated by agriculture. Past and continuing declines due to habitat loss and degradation are threatening populations. The mussel has also been lost from the Great Lakes and connecting channels due to zebra mussels.

mapleleaf mussel

photo courtesy of S. Staton