Pacifastacus nigrescens Stimpson, 1857
Taxonomy & Nomenclature
Last rcord late 1800's
IUCN RedList status: Extinct
One type is known to have been destroyed, probably in a Chicago fire in 1871 (Fetzner, 2008)
Original scientific description:
Stimpson, W. (1857). 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.
Bouchard, R. W. (1977). Distribution, systematics status, and ecological notes on five poorly known species of crayfishes in western North America (Decapoda: Astacidae and Cambaridae). Freshwater Crayfish 3: 409-423.
Fetzner, J.W. (2008). "Pacifasticus nigrescens" on Crayfish Taxonomy Browser. Available at: https://iz.carnegiemnh.org/crayfish/NewAstacidea/infraorder.asp?io=Astacidea. Accessed: 25 April 2011.
NatureServe. (2011). NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available https://www.natureserve.org/explorer (Accessed: September 18, 2011).
Riegel, J.A. 1959. The systematics and distribution of crayfishes in California. Calif. Fish and Game 45(1): 29-50.
Rogers, D.C. 2005. Identification manual to the freshwater Crustacea of the western United States and adjacent areas encountered during bioassessment. Technical Publication #1. EcoAnalysts, Inc., Moscow.
Schuster, G.A., Taylor, C.A. & Cordeiro, J. (2010). Pacifastacus nigrescens. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. (https://www.iucnredlist.org). Downloaded on 25 April 2011.
Taylor, C.A., Schuster, G.A., Cooper, J.E., DiStefano, R.J., Eversole, A.G., Hobbs III, H.H., Robison, H.W., Skelton, C.W. and Thoma, R.F. 2007. A Reassessment of the Conservation Status of Crayfishes of the United States and Canada after 10+ Years of Increased Awareness. Fisheries, American Fisheries Society 32(8): 372-389.