Hobbs & Hobbs, 1990 
Procambarus zonangulus was originally described from Jefferson County, Hardin County and Orange County, Texas, where it lives in streams, but the species' natural distribution is unclear, possibly including parts of Alabama, Louisiana and Mississippi. It has also been introduced to other states, including Maryland and West Virginia.
P. zonangulus has become an important species for aquaculture, and 20%–30% of the crayfish harvested in Louisiana are P. zonangulus. Due to the taxonomic uncertainties, this species is listed as Data Deficient on the IUCN Red List.
- "Procambarus zonangulus". Integrated Taxonomic Information System. Retrieved October 7, 2010.
- "Differences between red swamp crawfish and white river crawfish". Louisiana State University Agricultural Center. December 3, 2009.
- Yavuz Mazlum & Arnold G. Eversole (2008). "Comparison of the survival, growth and yield of red swamp crayfish and white river crayfish in monoculture and polyculture systems". Aquaculture International 16 (4): 345–350. doi:10.1007/s10499-007-9149-3.
- James W. Fetzner, Jr. (January 14, 2008). "Procambarus (Ortmannicus) zonangulus Hobbs and Hobbs, 1990". Crayfish Taxon Browser. Carnegie Museum of Natural History.
- "Crayfish in Alabama". Alabama Department of Conservation and Natural Resources. 2008.
- Jay V. Kilian, Andrew J. Becker, Scott A. Stranko, Matthew Ashton, Ronald J. Klauda, Jay Gerber & Martin Hurd (2010). "The Status and Distribution of Maryland Crayfishes". Southeastern Naturalist 9 (sp3): 11–32. doi:10.1656/058.009.s302.
- Zachary J. Loughman & Stuart A. Welsh (2010). "Distribution and Conservation Standing of West Virginia Crayfishes". Southeastern Naturalist 9 (sp3): 63–78. doi:10.1656/058.009.s304.
- K. A. Crandall (2010). "Procambarus zonangulus". IUCN Red List of Threatened Species. Version 3.1. International Union for Conservation of Nature. Retrieved October 7, 2010.