Abyssorchomene gerulicorbis, comb. nov.

• Main Authors: Lowry, J. K., Kilgallen, N. M.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Uristidae; Abyssorchomene; Abyssorchomene gerulicorbis; Arctic; Austral; Pacific; Indian; Queensland; Lowry; Rapa; Thurston; East Cape; Kamchatka; North Atlantic; North East Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.6319000; https://zenodo.org/record/6319000

Abyssorchomene gerulicorbis (Shulenberger & Barnard, 1976) comb. nov. Orchomene affinis .— Birstein & Vinogradov, 1955: 223, fig. 9. Orchomene gerulicorbis Shulenberger & Barnard, 1976: 243, figs 1–3.—Thurston, 1979: 56 (biology).— Barnard & Ingram, 1990: 21.— Barnard & Karaman, 1991: 508. Orchomenella ( Orchomenopsis ) gerulicorbis .— Palerud & Vader, 1991: 41.— Jones, Collins, Bagley, Addison & Priede (1998): 1124, table 2 (ecology). Orchomenella gerulicorbis .— Thurston, 1990: 262 Table 3, 264 Table 5, etc. (ecology).—Lowry Stoddart, 1994: 181.— Lowry & Stoddart 2003: 169.— Jamieson, Kilgallen, Rowden, Fujii, Lörz, Kitazawa & Priede, 2011: 53, 55, table 3, 58, table 6 (ecology).—Duffy, Horton & Billet, 2012: 4865, table 3 (ecology).— Corrigan, Horton, Fotherby, White & Hoelzel, 2013: 6 (molecular).— Cousins, Horton, Wigham & Bagley, 2013: 303, table 3 (ecology). Types. Holotype, female, 13. 9 mm, USNM 149204. Type locality. 440 miles north of Oahu, Hawaii, (28°00'00"N 155°00'00"W), 5720 m, water temperature, 1.2°C, bottom smooth red mud with Manganese nodules. Australian material examined. Queensland: 22 specimens, AM P.49519; 4 specimens, AM P.49523; 261 specimens, AM P.50232; 270 specimens, AM P.50239; 21 specimens, AM P.50295; 14 specimens, AM P.57597; 3 specimens, AM P.57601; 10 specimens, AM P.57603; 5 specimens, AM P.57610; 2 specimens, AM P.57613; 1 female, AM P.71842; 14 specimens, AM P.71843, east of Flynn Reef, Queensland, Australia (16°37.82'S 146°23.08'E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-930–QLD932 & QLD-948–QLD-950/ SEAS]. Tasmania. 20 specimens, AM P.73704, Hill D 1, south-southeast of South East Cape (44°23.4'S 147°16.2'E), 1942 m, baited trap, 31 January 1997, CSIRO party on FRV Southern Surveyor , FRV Southern Surveyor [SS01 /97/ 65]. Extralimital material examined: 8 specimens, AM P.40544, San Clemente Basin, California, United States of America (32°29.8'N 117°59.0'W), 1860 m, 05 November 1987, S.C. France, RV Robert Gordon Sproul [114]; 22 specimens, AM P.42143, off Rapa, Austral Isles, French Polynesia, (27°35.3' S 144°15.5'W), 870 m, baited trap, 17 August 1991, J.K. Lowry & J.M. Poupin, RV Marara [FRP-55]; 48 specimens, AM P.42144; 4 specimens, AM P.42145, off Rapa, Austral Isles, French Polynesia, (27°35.5' S 144°15.8'W), 750 m, baited trap, 18 August 1991, J.K. Lowry & J.M. Poupin, RV Marara [FRP-64 & FRP-66]. Diagnostic description. Mandible molar setose with a triturating surface. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subrectangular, anterior margin nearly straight ischium not enlarged; propodus margins subparallel; palm transverse, slightly convex. Gnathopod 2 chelate; palm obtuse, margin excavate; dactylus with ‘setal basket’ on posterodistal margin. Pereopod 7 basis tapering distally . Epimeron 3 posteroventral corner narrowly rounded . Telson moderately cleft. Remarks. Abyssorchomene gerulicorbis has a subrectangular first coxa with a nearly straight anterior margin similar to A. abyssorum and A. charcoti . Abyssorchomene gerulicorbis and A. abyssorum have subchelate first gnathopods (parachelate in A. charcoti ). It is difficult to separate A. gerulicorbis from A. abyssorum and A. scotianensis . Abyssorchomene gerulicorbis and A. abyssorum both have subrectangular first coxae (subtly adzeshaped in A. scotianensis ). The inner plate of maxilla 2 is significantly shorter than the outer plate in the A. abyssorum of Barnard & Ingram (1990), but not in the specimen of Stebbing (1888) or to a less extent the specimen of Birstein & Vinogradov (1990). The adze-shaped first coxa separated A. scotianensis separates form these two species but in other characters they are extremely similar. Abyssorchomene gerulicorbis differs from A. chevreuxi mainly in the upper lip which is slightly produced and apically narrowly rounded (upper lip not produced in A. chevreuxi ) and in A. gerulicorbis the dactylus of gnathopod 1 has a posterodistal ‘setal basket’ (absent in A. chevreuxi ). Distribution. North Atlantic Ocean: Porcupine, Iberian, Madeira, Cape Verde, and Guiana Abyssal Plains (Thurston 1990). North Pacific Ocean: Kuril-Kamchatka (Birstein & Vinogradov 1955); north of Hawaii (Shulenberger & Barnard 1976). South Pacific Ocean: Austral Isles (Lowry & Stoddart 1994); Kermadec Trench (Jamieson et al . 2011); east coast of Australia (this study). Indian Ocean: Crozet Plateau (Cousins et al. 2013). : Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 9-10, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734 : {"references": ["Shulenberger, E. & Barnard, J. L. (1976) Amphipods from an abyssal trap set in the North Pacific gyre. Crustaceana, 31, 241 - 258. http: // dx. doi. org / 10.1163 / 156854076 x 00035", "Birstein, J. A. & Vinogradov, M. E. (1955) Pelagicheskie gammaridy (Amphipoda Gammaridea) Kurilo-Kamchatskoi Vpadiny. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 12, 210 - 287, 35 figs.", "Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499", "Barnard, 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. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367", "Palerud, R. & Vader, W. (1991) Marine Amphipoda Gammaridea in north-east Atlantic and Norwegian Arctic. Tromura, Naturvitenskap, 68, 1 - 97.", "Jones, E. M., Collins, M. A., Bagley, P. M., Addison, S. & Priede, I. G. (1998) The fate of cetacean carcasses in the deep sea: observations on consumption rates and succession of scavenging Species in the abyssal north-east Atlantic Ocean. Proceedings of the Royal Society of London B, 265 (1401), 1119 - 1127. http: // dx. doi. org / 10.1098 / rspb. 1998.0407", "Thurston, M. H. (1990) Abyssal necrophagous amphipods (Crustacea: Amphipoda) in the northeast and tropical Atlantic Ocean. Progress in Oceanography, 24, 257 - 274. http: // dx. doi. org / 10.1016 / 0079 - 6611 (90) 90036 - 2", "Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.", "Jamieson, A. J., Kilgallen, N. M., Rowden, A. A., Fujii, T., Lorz, A. - N., Kitazawa, K. & Priede, I. G. (2011) Bait-attending fauna of the Kermadec Trench, SW Pacific Ocean: Evidence for an ecotone across the abyssal - hadal transition zone. Deep-Sea Research I, 58 (2011), 49 - 62. http: // dx. doi. org / 10.1016 / j. dsr. 2010.11.003", "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.", "Cousins, N. J., Horton, T., Wigham, B. D. & Bagley, P. M. (2013) Abyssal scavenging demersal fauna at two areas of contrasting productivity on the Subantarctic Crozet Plateau, southern Indian Ocean. African Journal of Marine Science, 35 (2), 299 - 306. http: // dx. doi. org / 10.2989 / 1814232 x. 2013.802747", "Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.", "Lowry, J. K. & Stoddart, H. E. (1994) Crustacea Amphipoda, Lysianassoids from the tropical western South Pacific Ocean. In: Crosnier, A. (Ed.), Resultats des Campagnes MUSORSTOM. Vol. 12. Memoires de Museum National d'Histoire Naturelle, 161, 127 - 223."]}