Under Construction

Orconectes (Gremicambarus) causeyi Jester 1967

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


Holotype, allotype, and morphotype, National Museum of Natural History, Smithsonian Institution, Washington D.C. 115698, 115699, 1156700 (male I, female, male II); paratypes, National Museum of Natural History, Smithsonian Institution, Washington D.C., Department of Zoology, Tulane University, New Orleans, Louisiana.

Type Locality

Conchas Reservoir, 32 miles (51.2 km) northwest of Tucumcari on State Route 104, San Miguel County, New Mexico.


"New Mexico, Texas, Arkansas, Oklahoma, Missouri, and Kansas" (Reimer, 1969:55). To this may be added southwestern Colorado.


Streams and impoundments.


As stated in an earlier checklist (Hobbs, 1974b) and elsewhere, this crayfish appears to be indistinguishable from Orconectes (G.) virilis (Hagen). Until the relationships of these two species and O. (G.) nais (Faxon) become more adequately understood, the conservative recognition of the three seems advisable. Particularly does this seem prudent in light of Unger's (1978) having presented evidence that the three taxa are perhaps distinct and that O. (G.) causeyi is more similar to O. (G.) nais than to O. (G.) virilis. Unfortunately, his samples were quite limited both in quantity and in representing the range of the complex.


Hobbs, Horton H., Jr. 1974. A Checklist of the North and Middle American Crayfishes (Decapoda: Astacidae and Cambaridae). Smithsonian Contributions to Zoology, 166: iii + 161 pages, figures 1-294.

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

Jester, Douglas B. 1967. A New Crawfish of the Genus Orconectes from New Mexico (Decapoda, Astacidae). American Midland Naturalist, 77(2): 518-524, figures 1-12.

Reimer, Rollin D. 1969. A Report on the Crawfishes (Decapoda, Astacidae) of Oklahoma. Proceedings of the Oklahoma Academy of Sciences, 48: 49-65, figures 1-46.

Unger, Philip A. 1978. The Crayfishes (Crustacea: Cambaridae) of Colorado. In Natural History Inventory of Colorado, 3: 1-19, figures 1-30.

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 (Gremicambarus) causeyi Jester 1967. Version 01 January 2001 (under construction). http://tolweb.org/Orconectes_%28Gremicambarus%29_causeyi/7215/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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