Neosho Midget Crayfish

Orconectes macrus
Cambaridae (freshwater crayfish) in the order Decapoda (shrimp, crabs, and lobsters)

This small crayfish is a subdued mottled brown, with a prominent black band crossing the carapace near its junction with the abdomen. The body is stout, and the pincers are broad and powerful. This is the only small brown crayfish that occurs in the Spring and Elk river systems. Other species in these drainages achieve a larger size, are more greenish, and have conspicuous black rings or whitish tubercles on their pincers.

Adult length: about 3/4 inch to 2 inches.
Habitat and conservation: 
It lives in short burrows that it digs in the bottoms of gravelly riffles.
Distribution in Missouri: 
The Neosho midget crayfish has a very localized distribution in the Spring and Elk river systems of the southwestern Ozarks. In this area it is one of the most abundant crayfish.
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