This rather plain, gray-green crayfish is characterized by a pale central zone along the middle of the carapace and abdomen. The pincers are orange-tipped, and in mature males are uniquely tinged with purple. The rostrum is without lateral notches or spines near its tip.
The calico crayfish superficially resembles the virile (or “Northern”) crayfish, and sometimes occurs in the same habitats. The latter species does not have a pale zone along the middle of the carapace and abdomen, and the rostrum has lateral notches or spines near its tip.