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Astacidea    Astacidae    Pacifastacus   Hobbsastacus   Pacifastacus nigrescens

Pacifastacus (Hobbsastacus) nigrescens  (Stimpson, 1857) 
Sooty crayfish

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References:

Ortmann, A. E. 1902. The Geographical Distribution of Freshwater Decapods and Its Bearing Upon Ancient Geography. Proceedings of the American Philosophical Society, 41(171):267 - 400, 8 figures.

Riegel, J. A. 1959b. The Systematics and Distribution of Crayfishes in California. California Fish and Game, 45(1):29 - 50, 10 figures.

Stimpson, W. 1857a. Notices of New Species of Crustacea in 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(6):84 - 89.

Stimpson, W. 1857b. On the Crustacea and Echinodermata of the Pacific Shores of North America I. Crustacea. Boston Journal of Natural History, 6(4):444 - 532.

Bott, R. 1950a. Die Flusskrebse Europas (Decapoda, Astacidae). Proceedings of the Senckenberg Naturalist Society, [Frankfurt am Main: W. Kramer]. 483:1 - 36, 25 figures, 6 plates.

Bouchard, R. W. 1978d. Morphology of the Mandible in Holarctic Crayfishes (Decapoda: Astacidae and Cambaridae): Ecological and Phylogenetic Implications. Papers from the Third International Symposium on Freshwater Crayfish 3:425-452, 4 figures.

Bouchard, R. W. 1978e. Distribution, Systematic Status and Ecological Notes on Five Poorly Known Species of Crayfishes in Western North America (Decapoda: Astacidae and Cambaridae). Papers from the Third International Symposium on Freshwater Crayfish 3:409-423, 2 figures.

Cabantous, M. A. 1976. Introduction and Rearing of Pacifastacus at the Research Center of Les Clouzioux 18450 Brinon S/Sauldre, France. In James W. Avault, Jr., editor, Freshwater Crayfish. Papers from the Second International Symposium on Freshwater Crayfish, Baton Rouge, Louisiana: Division of Continuing Education, Louisiana State University. Pages 49 - 53.

Faxon, W. 1884a. Descriptions of new species of Cambarus, to which is added a synonymical list of the known species of Cambarus and Astacus. Metcalf and Co., Boston,.

Faxon, W. 1914. Notes on the Crayfishes in the United States National Museum and The Museum of Comparative Zoology with Descriptions of New Species and Subspecies. Memoirs of The Museum of Comparative Zoology at Harvard College, 40(8):351 - 427, 13 plates.

Goldman, C. R. 1973. Ecology and Physiology of the California Crayfish Pacifastacus leniusculus (Dana) in Relation to Its Suitability for Introduction into European Waters. In Sture Abrahamsson, editor, Freshwater Crayfish. Papers from the First International Symposium on Freshwater Crayfish, Austria 1972. Lund: Studentlitteratur. Pages 105 - 120, 5 figures.

Hagen, H. A. 1870. Monograph of the North American Astacidae. viii+109 pages, 11 plates. Illustrated Catalogue of the Museum of Comparative Zoology at Harvard College, Number 3.

Hobbs, H. H., Jr. 1972b. Crayfishes (Astacidae) of North and Middle America. Biota of Freshwater Ecosystems, United States Environmental Protection Agency, Water Pollution Control Research Series Identification Manual 9:x+173 pp., 115 figures. [Reprinted 1976, see H. H. Hobbs, Jr., 1976a.

Hobbs, H. H. 1974. A checklist of the North and Middle American crayfishes (Decapoda: Astacidae and Cambaridae). Smithsonian Institution Press.


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