Procambarus delicatus
# Procambarus delicatus

Procambarus delicatus, sometimes called the big-cheeked cave crayfish, is a species of crayfish in the family Cambaridae. It is endemic to a single spring in the Ocala National Forest, Lake County, Florida.

It is considered Critically Endangered (Possibly Extinct) by the IUCN Redlist, having not been seen since 1976.

