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Orconectes (Hespericambarus) blacki Walls 1972

Keith A. Crandall, James W. Fetzner, Jr., and Horton H. Hobbs, Jr.
Containing group: Orconectes (Hespericambarus)


Holotype, National Museum of Natural History, Smithsonian Institution, Washington D.C. 131255 (male I); paratypes, National Museum of Natural History, Smithsonian Institution, Washington D.C., Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, Department of Zoology, Tulane University, New Orleans, Louisiana, Joe B. Black, and Jerry G. Walls.

Type Locality

Bearhead Creek, 4 miles (6.4 km) southwest of Juanita on State Route 109, Beauregard Parish, Louisiana.


Known from only six localities in Beauregard and Calcasieu parishes, Louisiana, and according to Walls 1972:455, intergrading with O. d. hathawayi "in Calcasieu River drainage of Allen, Beauregard, Calcasieu, and Vernon Parishes, Louisiana." In his recent revision of the genus Orconectes, however, Fitzpatrick (1987a), as noted above, recognized no geographic races of Orconectes (H.) difficilis, according Walls' subspecies specific rank.



Conservation Status

Category: VU (Vulnerable)
Criteria: B1+2c, D1
Conservation Links:


Baillie, Jonathan, and Brian Groombridge. 1996. IUCN Red List of Threatened Animals.

Fitzpatrick, Joseph F., Jr. 1987. The Subgenera of the Crawfish Genus Orconectes (Decapoda: Cambaridae). Proceedings of the Biological Society of Washington, 100(1): 44-74, figures 1-18.

Hobbs, H. H. Jr. 1989. An Illustrated Checklist of the American Crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae). Smithsonian Institution Press.

Walls, Jerry G. 1972. Three New Crawfishes Related to Orconectes difficilis (Faxon) (Decapoda: Astacidae). Proceedings of the Biological Society of Washington, 84(53): 449-459, figures 1-4.

About This Page
Page constructed by Emily Browne.

Keith A. Crandall
Brigham Young University, Provo, Utah, USA

James W. Fetzner, Jr.
Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA

Horton H. Hobbs, Jr.
Wittenberg University, Springfield, Ohio, USA

Correspondence regarding this page should be directed to Keith A. Crandall at

All Rights Reserved.

Citing this page:

Crandall, Keith A., James W. Fetzner, Jr., and Horton H. Hobbs, Jr. 2001. Orconectes (Hespericambarus) blacki Walls 1972. Version 01 January 2001 (under construction). http://tolweb.org/Orconectes_%28Hespericambarus%29_blacki/7234/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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