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Orconectes (Hespericambarus) difficilis Faxon 1898

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


Syntypes, National Museum of Natural History, Smithsonian Institution, Washington D.C. 19687 (9 male I, 10 female, 5 male II), National Museum of Natural History, Smithsonian Institution, Washington D.C. 19688 (male I), Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts 4359 (male I, female, male II), Instituto e Museo de Zoologia, Della Universita di Torino, Italy.

Type Locality

McAlester, Pittsburg County, Oklahoma.


Pittsburg and Latimer counties, Oklahoma, Upshur County, Texas to Washington County, Arkansas, southeastward into Louisiana (see Walls, 1972).


Rocky streams.


See "Range" under O. (H.) blacki.


Faxon, Walter. 1898. Observations on the Astacidae in the United States National Museum and in the Museum of Comparative Zoology, with Descriptions of New Species. Proceedings of the United States National Museum, 20(1136): 643-694, plates 62-70.

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): 449-458, 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) difficilis Faxon 1898. Version 01 January 2001 (under construction). http://tolweb.org/Orconectes_%28Hespericambarus%29_difficilis/7236/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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