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Pacifastacus (Hobbsastacus) nigrescens Stimpson 1857

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

Types

Not extant; "probably destroyed in Chicago fire in 1871" (Faxon, 1914:408).

Type Locality

Vicinity of San Francisco, California.

Range

Vicinity of San Francisco, California.

Habitat

Streams.

Remarks

This crayfish is probably extinct.

Conservation Status

Category: CR (Critically Endangered)
Criteria: B1+2c
Conservation Links:

References

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

Faxon, Walter. 1914. Notes on the Crayfishes in the United States National Museum and the Museum of Comparative Zoology with Descriptions of New Species and Subspecies to Which is Appended a Catalogue of the Known Species and Subspecies. Memoirs of the Museum of Comparative Zoology at Harvard College, 40(8): 351-427, 13 plates.

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

Stimpson, William. 1857. Notices of New Species of Crustacea of Western North America; Being an Abstract from a Paper to be Published in the Journal of the Society. Proceedings of the Boston Society of Natural History, 6(4): 444-532.

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. Pacifastacus (Hobbsastacus) nigrescens Stimpson 1857. Version 01 January 2001 (under construction). http://tolweb.org/Pacifastacus_%28Hobbsastacus%29_nigrescens/6683/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/

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Pacifastacus (Hobbsastacus) nigrescens

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