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| Procambarus gracilis Prairie Crayfish: powerful pincers, which often have a slight olive-green upper surface. |
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| Procambarus acutus White River Crayfish: long, slender pincers; carapace laterally compressed, sides with many small tubercles; blackish, wedge-shaped pattern on the abdomen; |
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| Cambarus diogenes Devil Crawfish: wide and squarish rostrum; eyes well developed. |
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| Fallicambarus fodiens Digger Crayfish: short, blunt, rounded rostrum; cervical groove interrupted and with tuft of setae; smallish eyes; carapace slightly vaulted. |
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| Orconectes propinquus Northern Clearwater Crayfish: dark band or stripe along midline of carapace. |
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| Orconectes virilis Northern Crayfish: cervical, cephalic, marginal spines; obsolete suborbital angle; interrupted cervical groove; eyes somewhat small. |
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| Orconectes immunis Calico Crayfish |
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| Orconectes rusticus Rusty Crayfish: dark, rusty spots on each side of their carapace, grayish-green to reddish-brown smooth claws; more ID, sex. |