Abstract
Cambarus acuminatus was described by Walter Faxon in 1884 from three specimens collected from the Saluda River in northwestern South Carolina, USA. Cambarus acuminatus sensu lato has since been acknowledged to comprise a species complex. This complex, also known as Cambarus sp. C, spans a range across much of the Piedmont Plateau and Coastal Plain from central South Carolina north to Maryland and southeastern Pennsylvania. A primary impediment to a much-needed thorough taxonomic assessment and revision of C. sp. C is the absence of taxonomically useful type material of C. acuminatus coupled with the lack of a detailed description of the species. Here we provide a redescription of C. acuminatus based on modern standards for astacoidean crayfishes in the genus Cambarus and emend the circumscription of the species, thereby laying the groundwork necessary for future taxonomic and phylogenetic work within, and involving, the C. sp. C complex.
References
Cooper, J.E. (2001) Cambarus (Puncticambarus) hobbsorum, a new crayfish (Decapoda: Cambaridae) from North Carolina. Proceedings of the Biological Society of Washington, 114 (1), 152–161.
Cooper, J.E. & Cooper, D.G. (2003) A new crayfish of the genus Cambarus Erichson, 1846 (Decapoda: Cambaridae) from the Cape Fear River basin in the Sandhills of North Carolina. Proceedings of the Biological Society of Washington, 116 (4), 920–932.
Cooper, J.E. (2006) A new species of crayfish of the genus Cambarus Erichson, 1846 (Decapoda: Cambaridae) from the eastern Blue Ridge foothills and western Piedmont Plateau of North Carolina. Proceedings of the Biological Society of Washington, 119 (1), 67–80.
https://doi.org/10.2988/0006-324X(2006)119[67:ANSOCO]2.0.CO;2Cooper, J.E. & Braswell, A.L. (1995) Observations on North Carolina crayfishes (Decapoda: Cambaridae). Brimleyana, 22, 87–132.
Cooper, J.E. & Price, J.E. (2010) A new spinose crayfish of the genus Cambarus, subgenus Puncticambarus (Decapoda: Cambaridae), from South Carolina. Proceedings of the Biological Society of Washington, 123 (4), 335–344.
https://doi.org/10.2988/10-20.1
Fabricius, J.C. (1798) Supplementum entomologiae systematicae. Hafniae Proft et Storch, 572 pp.
Faxon, W. (1884) Descriptions of new species of Cambarus; to which is added a synonymical list of the known species of Cambarus and Astacus. Proceedings of the American Academy of Arts and Sciences, 20, 107–158.
Faxon, W. (1885) A revision of the Astacidae. Part I. The genera Cambarus and Astacus. Memoirs of the Museum of Comparative Zoölogy at Harvard College, 10 (4), 1–186.
https://doi.org/10.5962/bhl.title.13329
Faxon, W. (1914) Notes on the crayfishes in the United States National Museum and the Museum of Comparative Zoölogy 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.
https://doi.org/10.5962/bhl.title.49092
Fetzner, Jr., J.W. & Crandall, K.A. (2013) Assessing the genetic distinctiveness of Cambarus (Puncticambarus) acuminatus: a recently discovered crayfish in Valley Creek within Valley Forge National Historical Park. Natural Resource Technical Report NPS/VAFO/NRTR—2013/752. National Park Service, Fort Collins, Colorado.
https://doi.org/10.13140/RG.2.2.16232.52483
Gamradt, S.C., Kats, L.B. & Anzalone, C.B. (1997) Aggression by non‐native crayfish deters breeding in California newts. Conservation Biology, 11, 793–796.
https://doi:10.1046/j.1523-1739.1997.96230.x
Girard, C. (1852) A revision of the North American Astaci, with observations on their habits and geographical distribution. Proceedings of the Academy of Natural Sciences of Philadelphia, 6, 87–91.
Hanshew, B.A. & Garcia, T.S. (2012) Invasion of the shelter snatchers: behavioral plasticity in invasive red swamp crayfish, Procambarus clarkii. Freshwater Biology, 57, 2285–2296.
https://doi.org/10.1111/fwb.12002
Hobbs, Jr., H.H. (1969) On the distribution and phylogeny of the crayfish genus Cambarus. In: Holt, P.C., Hoffman, R.L. & Hart, Jr., C.W. (Eds.), The Distributional History of the Biota of the Southern Appalachians. Part 1: Invertebrates. Virginia Polytechnic Institute, Blacksburg, Virginia, pp. 93–178.
Hobbs, Jr., H.H. (1972) Crayfishes (Astacidae) of North and Middle America. Biota of Freshwater Ecosystems. Identification Manual No. 9 (U.S. Environmental Protection Agency), i–x + 1–173.
Hobbs, Jr., H.H. (1974) A checklist of the North and Middle American crayfishes (Decapoda: Astacidae and Cambaridae. Smithsonian Contributions to Zoology, 166, 1–161.
https://doi.org/10.5479/si.00810282.166
Hobbs, Jr., H.H. (1981) The crayfishes of Georgia. Smithsonian Contributions to Zoology, 318, 1–549.
https://doi.org/10.5479/si.00810282.318
Hobbs, Jr., H.H. (1989) An illustrated checklist of the American crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae). Smithsonian Contributions to Zoology, 480, 1–236.
https://doi.org/10.5479/si.00810282.480
Hobbs, Jr., H.H. & Hall, E.T. (1969) New crayfishes from Georgia (Decapoda, Astacidae). Proceedings of the Biological Society of Washington, 82 (21), 281–294.
Hobbs, Jr., H.H., Jass, J.P. & Huner, J.V. (1989) A review of global crayfish introductions with particular emphasis on two North American species (Decapoda, Cambaridae). Crustaceana, 56, 299–316.
https://doi.org/10.1163/156854089x00275
Hobbs, Jr., H.H. & Peters, D.J. (1977) The entocytherid ostracods of North Carolina. Smithsonian Contributions to Zoology, 247, 1–77.
https://doi.org/10.5479/si.00810282.247
Jordan, D.S. & Brayton, A.W. (1878) Contributions to North American Ichthyology based primarily on the Collections of the United States National Museum. III. A. On the distribution of the fishes of the Allegany region of South Carolina, Georgia, and Tennessee, with descriptions of new or little known species. Bulletin of the United States National Museum, 12, 3–95. https://doi.org/10.5962/bhl.title.39673
Kyzer, P.B. (1882) A full descriptive map and sketch of Greenville Co. [South Carolina: Paul B. Kyzer, Copyright] [Map] Retrieved from the Library of Congress. Available from: https://www.loc.gov/item/2013593123/ (accessed September 2018)
LeConte, J. (1856) Descriptions of new species of Astacus from Georgia. Proceedings of the Academy of Natural Sciences of Philadelphia, 7, 400–402.
Lieb, D.A., Carline, R.F., Rosenberger, J.L. & Mengel, V.M. (2008) The discovery and ecology of a member of the Cambarus acuminatus complex (Decapoda: Cambaridae) in Valley Creek, southeastern Pennsylvania. Journal of Crustacean Biology, 28 (3), 439–450.
https://doi.org/10.1651/07-2877R.1
Loughman, Z.J., Welsh, S.A. & Thoma, R.F. (2017) Cambarus (C.) appalachiensis, a new species of crayfish (Decapoda: Cambaridae) from the New River Basin of Virginia and West Virginia, USA. Zootaxa, 4243 (3), 432–454.
https://doi.org/10.11646/zootaxa.4243.3.2
McDaniel, W.A. (1870) The Greenville Enterprise (Greenville, S.C.). Retrieved from the Library of Congress. [June 22] Available from: http://chroniclingamerica.loc.gov/lccn/sn83025799/1870-06-22/ed-1/seq-3/ (accessed September 2018)
Pearl, C.A., Adams, M.J. & McCreary, B. (2013) Habitat co-occurrence of native and invasive crayfish in the Pacific Northwest, USA. Aquatic Invasions, 8, 171–184.
https://doi.org/10.3391/ai.2013.8.2.05
Prins R. & Hobbs, Jr., H.H. (1972) A new crayfish of the subgenus Puncticambarus from the Savannah River drainage with notes on Cambarus (P.) reburrus Prins (Decapoda, Astacidae). Proceedings of the Biological Society of Washington, 84 (47), 411–420.
Ricciardi, A. & Rasmussen, J.B. (1999) Extinction rates of North American freshwater fauna. Conservation Biology, 13 (5), 1220–1222.
https://doi.org/10.1046/j.1523-1739.1999.98380.x
Rodríguez, C., Bécares, E., Fernández-aláez, M. & Fernández-aláez, C. (2005) Loss of diversity and degradation of wetlands as a result of introducing exotic crayfish. Biological Invasions, 7, 75.
https://doi.org/10.1007/s10530-004-9636-7
Souty-Grosset, C., Anastácio, P.M., Aquiloni, L., Banha, F., Choquer, J., Chucholl, C. & Tricarico, E. (2016) The red swamp crayfish Procambarus clarkii in Europe: Impacts on aquatic ecosystems and human well-being. Limnologica, 58, 78–93.
https://doi.org/10.1016/j.limno.2016.03.003
Taylor, C.A., Warren, Jr., M.L., Fitzpatrick, Jr., J.F., Hobbs III, H.H., Jezerinac, R.F., Pflieger, W.L. & Robison, H.W. (1996) Conservation status of crayfishes of the United States and Canada. Fisheries, 21 (4), 25–38.
https://doi.org/10.1577/1548-8446(1996)021<0025:CSOCOT>2.0.CO;2
Taylor, C.A., Schuster, G.A., Cooper, J.E., DiStefano, R.J., Eversole, A.G., Hamr, P., Hobbs III, H.H., Robison, H.W., Skelton, C.E. & 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, 32 (8), 372–389.
https://doi.org/10.1577/1548-8446(2007)32[372:AROTCS]2.0.CO;2