Cajun Dwarf Crayfish
Our two species of dwarf crayfish are appropriately named for their size. Both are reddish brown to gray, with a paired series of dark, wavy stripes or dashed lines along the dorsal surface. The tail fan usually has a dark central blotch. The pincers are narrow and long. The Cajun dwarf crayfish is distinguished from the similar-looking Shufeldt’s dwarf crayfish by examining the male reproductive structures, which are curved in the Cajun, and straight in Shufeldt’s. The two are rarely found in the same body of water.
Our two dwarf crayfish can be distinguished from the young of other lowland crayfish by the conspicuous dark pigment in the tail fan, and the lengthwise dark stripes or lines on the carapace. Also, the rostrum is flat, without a central troughlike depression.