Abstract
A new species of Stephonyx Lowry and Stoddart, 1989 from northeastern Brazil is described, the second record of the genus from Brazil. The new Brazilian species is morphologically close to the type species of the genus. In this paper we compare the different descriptions of Stephonyx biscayensis (Chevreux, 1908) and recommend the necessity of a revision, since some described species may or may not be S. biscayensis.
References
Barnard, J.L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1–80.
https://doi.org/10.5479/si.00810282.499Barnard, J.L. (1969) The families and genera of marine gammaridean Amphipoda. United States National Museum Bulletin, 271, 1–535.
https://doi.org/10.5479/si.03629236.258.1Barnard, J.L. & Karaman, G.S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1−866.
Barnard, K.H. (1940) Contributions to the crustacean fauna of South Africa. 12. Further additions to the Tanaidacea, Isopoda, and Amphipoda, together with keys for the identification of the hitherto recorded marine and fresh-water species. Annals of the South African Museum, 32, 381−543.
Bellan-Santini, D. (1997) Amphipods of the cold-seep community on the south Barbados accretionary prism. Crustaceana, 70, 1–30.
https://doi.org/10.1163/156854097X00311Boeck, A. (1861) Bemaerkniger Angaaende de Ved de Norske Kyster forekommende Amphipoder. Forhandlinger ved de Skandinaviske naturforskeres ottende mode i Kobenhavn, 8, 631–677.
Chevreux, E. (1908) Diagnoses d’amphipodes nouveaux provenant des campagnes de la Princesse-Alice dans l’Atlantique nord. Bulletin de l’Institut Océanographique, 117, 1–13.
Chevreux, E. (1927) Malacostracés (suite). III. Crustacés Amphipodes. Expéditions Scientifiques du "Travailleur" et du "Talisman" pendant les années 1880, 1881, 1882, 1883, 41–152. 151–114.
https://doi.org/10.5962/bhl.title.13677
Chevreux, E. (1935) Amphipodes provenant des campagnes du Prince Albert Ier de Monaco. Résultats des Campagnes Scientifiques Accomplies sur son Yacht par Albert I Prince Souverain de Monaco, 90, 1–214, pls. 211–216.
https://doi.org/10.5962/bhl.title.2169
Corrigan, L., Horton, T., Fotherby, H., White, T.A. & Hoelzel, A.R. (2013) Adaptive Evolution of Deep-Sea Amphipods from the Superfamily Lysianassoidea in the North Atlantic. Evolutionary Biology, 41 (1), 154–165.
Dana, J.D. (1849) Synopsis of the genera of Gammaracea. American Journal of Science and Arts, Series 2, 8, 135–140.
De Broyer, C., Guerra-García, J.M., Takeuchi, I., Robert, H. & Meerhaeghe, A. (2004) Biodiversity of the Southern Ocean: a catalogue of the Antarctic and sub-Antarctic Caprellidae and Cyamidae (Crustacea: Amphipoda) with distribution and ecological data. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique Biologie, 74, 61–99.
Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31–41.
Freire, P. & Serejo, C.S. (2004) The genus Trischizostoma (Crustacea: Amphipoda: Trischizostomidae) from the Southwest Atlantic, collected by the REVIZEE Program. Zootaxa, 645, 1–15.
https://doi.org/10.11646/zootaxa.645.1.1Griffiths, C.L. (1975) The Amphipoda of southern Africa. Part 5. The Gammaridea and Caprellidea of the Cape Province west of Cape Agulhas. Annals of the South African Museum, 67, 91–181.
Griffiths, C.L. (1977) Deep-sea amphipods from west of Cape Point, South Africa. Annals of the South African Museum, 73 (4), 93–104.
Hurley, D.E. (1963) Amphipoda of the family Lysianassidae from the west coast of North and Central America. Allan Hancock Foundation Publications, Occasional Paper 25, 1–160.
Keable, S.J. (1995) Structure of the marine invertebrate scavenging guild of a tropical reef ecosystem: field studies at Lizard Island, Queensland, Australia. Journal of Natural History, 29, 27–45.
https://doi.org/10.1080/00222939500770021Lowry, J.K. & Kilgallen, N.M. (2014) A generic review of the lysianassoid family Uristidae and a description of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae). Zootaxa, 3867 (1), 1–92.
https://doi.org/10.11646/zootaxa.3867.1.1Lowry, J.K. & Stoddart, H.E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519–525.
https://doi.org/10.1111/j.1463-6409.1989.tb00145.xLowry, J.K. & Stoddart, H.E. (1995) New lysianassoid genera and species from south-eastern Australia (Crustacea: Amphipoda). Records of the Australian Museum, 47 (1), 7–25.
https://doi.org/10.3853/j.0067-1975.47.1995.5Lowry, J.K. & Stoddart, H.E. (1997) Amphipoda Crustacea IV. Families Aristiidae, Cyphocarididae, Endevouridae, Lysianassidae, Scopelocheiridae, Uristidae. Memoirs Hourglass Cruises, 10, 1–148.
Lowry, J.K. & Stoddart, H.E. (2002) The Amaryllididae of Australia (Crustacea: Amphipoda: Lysianassoidea). Records Australian Museum, 54, 129–214.
https://doi.org/10.3853/j.0067-1975.54.2002.1363Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477–1507.
https://doi.org/10.1080/00222933.2012.675598Poore, A.G.B. & Lowry, J.K. (1997) New ampithoid amphipods from Port Jackson, New South Wales, Australia (Crustacea: Amphipoda: Ampithoidae). Invertebrate Taxonomy, 11, 897–941.
https://doi.org/10.1071/IT95045Schellenberg, A. (1926) Amphipoda 3: Die Gammariden der Deutschen Tiefsee-Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898–1899, 23, 193–243, pl. 195.
Senna, A.R. (2009) The giant deep-sea amphipods (Lysianassoidea: Eurytheneidae) from Brazilian waters. Nauplius, 17, 81–96.
Senna, A.R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7–14.
Sheard, K. (1938) The amphipod genera Euonyx, Syndexamine and Paradexamine. Records of the South Australian Museum, 6, 169–186.
Stebbing, T.R.R. (1888) Report on the Amphipoda collected by H.M.S. Challenger during the years 1873–76. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76, Zoology, 29, 1–1737, 210 pls.
Stephensen, K. (1923) Crustacea Malacostraca, V: (Amphipoda, I). The Danish Ingolf-Expedition, 3, 1–100.
Stoddart, H.E. & Lowry, J.K. (2004) The deep-sea lysianassoid genus Eurythenes (Crustacea, Amphipoda, Eurytheneidae n. fam.). Zoosystema, 26 (3), 425–468.
Sorrentino, R., Alves, J., Johnsson, R. & Senna, A.R. (2016) A new species of Cyphocarididae (Crustacea, Amphipoda, Lysianassoidea) from off the northeastern Brazilian coast. Zootaxa, 4161 (3), 345–456.
https://doi.org/10.11646/zootaxa.4161.3.3Thomas, J.D. (1993) Identification Manual for the Marine Amphipoda: (Gammaridea) I. Common Coral Reef and Rocky Bottom Amphipods of South Florida. Florida Department of Environmental Protection, Tallahassee, FL, 83 pp.
Watling, L. (1989) A classification system for crustacean setae based on the homology concept. Crustacean Issues, 6, 15–26.