Cambarus monongalensis, the blue crayfish[2] or Monongahela crayfish,[1] is a species of burrowing crayfish native to Pennsylvania and West Virginia.

[5] The common name refers to the Monongahela River, with the first specimens being collected from Edgewood Park, Allegheny County, Pennsylvania.

[6] It is included on the IUCN Red List as a species of Least Concern.

[1] It should not be confused with Procambarus alleni, also known as the blue crayfish, which is endemic to Florida and a popular aquarium crustacean.

This crayfish article is a stub.