Procambarus connus Fitzpatrick, 1978

Carroltton crayfish, Corrollton crayfish



Taxonomy & Nomenclature

Considered a synonym of Procambarus hagenianus vesticeps by (Schuster et al., 2015; NatureServe, 2024), but treated as a distinct species by (Crandall & De Grave, 2017).


Conservation Status

Missing or Extinct if taxonomically valid (see above)

IUCN RedList status: Data Deficient



Mississippi (& Alabama?), USA


Biology & Ecology










Original scientific description:

Fitzpatrick, J. F. (1978). Systematics of the Crawfishes of the Hagenianus Group of the Genus Procambarus, Subgenus Girardiella (Decapoda, Cambaridae). Tulane Studies in Zoology and Botany 20(3-4): 57-97.


Other references:

Adams, S. (2010). Procambarus connus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. ( Downloaded on 17 July 2013.

Adams, S. (2010). Procambarus connus. The IUCN Red List of Threatened Species 2010: e.T18189A7758188. Accessed on 15 March 2023.

Crandall, K. A., and De Grave, S. (2017). An updated classification of the freshwater crayfishes (Decapoda: Astacidea) of the world, with a complete species list. Journal of Crustacean Biology 37(5):615-653.

Fitzpatrick, J. F., Jr. (1983). How to Know the Freshwater Crustacea. Wm. C. Brown Co. Publishers. Dubuque, Iowa. 277 pp.

Hobbs, Horton H., Jr. (1989). A illustrated checklist of the American crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae). Smithsonian Contributions to Zoology 480:1-236.

Hobbs, Horton. H. Jr. (1989). An Illustrated Checklist of the American crayfishes (Decapoda: Astacidae, Cambaridae & Parastacidae). Smithsonian Contributions to Zoology 480. Smithsonian Institute Press, Washington, D. C. 236 pp.

McLaughlin, P. A., Camp, D. K., Angel, M. V., Bousfield, E. L., Brunel, P., Brusca, R. C., Cadien, D., Cohen, A. C., Conlan, K., Eldredge, L. G., Felder, D. L., Goy, J. W., Haney, T., Hann, B., Heard, R. W., Hendrycks, E. A., Hobbs, H. H. III, Holsinger, J. R., Kensley, B., Laubitz, D. R., LeCroy, S. E., Lemaitre, R., Maddocks, R. F., Martin, J. W., Mikkelsen, P., Nelson, E., Newman, W. A., Overstreet, R. M., Poly, W. J., Price, W. W., Reid, J. W., Robertson, A., Rogers, D. C., Ross, A., Schotte, M., Schram, F., Shih, C., Watling, L., Wilson, G. D. F. and Turgeon, D. D. (2005). Common and scientific names of aquatic invertebrates from the United States and Canada: Crustaceans. American Fisheries Society Special Publication 31: 545 pp.

NatureServe. (2014). NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available (Accessed: January 29, 2015).

NatureServe. (2024).

Schuster, G. A., Taylor, C. A. and Adams, S. B. (2015). Procambarus (Girardiella) holifieldi, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a revision of the Hagenianus Group in the subgenus Girardiella. Zootaxa 4021(1): 1-32.

Taylor, C. A., Schuster, G. A., Cooper, J. E., DiStefano, R. J., Eversole, A. G., Hamr, P., Hobbs, H. H. III, Robison, H. W., Skelton, C. E. and Thoma, R. F. (2007). A reassessment of the conservation status of crayfishes of the United States and Canada after 10+ years of increased awareness. Fisheries 32(8): 371-389.

WoRMS (2021). Procambarus (Girardiella) connus Fitzpatrick, 1978. Accessed at: on 2021-10-31


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