Abyssorchomene distinctus

• 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 distinctus; Pacific; Lowry; Thurston; Kidd; East Cape; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5590159; https://zenodo.org/record/5590159

Abyssorchomene distinctus (Birstein & Vinogradov, 1960) Orchomene distinctus Birstein & Vinogradov, 1960: 191, fig. 10. Orchomene ( Abyssorchomene ) distinctus .— Barnard & Ingram, 1990: 22, figs 12–14.— Vinogradov, 1993: 43. Abyssorchomene distinctus .—? Thurston, 1990: 264 (ecology).— Lowry & Stoddart 2003: 281.— Jamieson, Kilgallen, Rowden, Fujii, Lorz, Kitazawa & Priede, 2011: 55, table 3, 58, table 6 (ecology).—Horton, Thurston & Duffy, 2013: 355, table 2 (ecology). Orchomene distinctus .— Barnard & Karaman, 1991: 508. Orchomenella distinctus .— Lowry & Stoddart 1994: 181. Types. Unknown. Type locality. Near Palau, western South Pacific Ocean (5°02'N 135°33’E) 4732 m, trawl 0–2000 m; East Pacific vent region 13°N, 2635 m. Material examined. 1 female, AM P.70533, east of Sydney, New South Wales, Australia (33°50.9’S 152°15.2’E), 3178–4860 m, Isaacs-Kidd midwater trawl, 26–27 April 1989, J. R. Paxton, NMAS Cook [JP 89-2]; 1 specimen, AM P.96583, 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]. Diagnostic description. Mandible molar setose with triturating surface. Maxilla 2 inner plate significantly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subtriangular, adze-shaped; ischium not enlarged; propodus margins subparallel; palm transverse, slightly convex . Gnathopod 2 subchelate; palm transverse, margin sinusoidal. Pereopod 7 basis tapering distally . Epimeron 3 posteroventral corner broadly rounded . Telson moderately cleft. Remarks. Abyssorchomene distinctus has a broadly rounded posteroventral corner on epimeron 3 such as A. charcoti , A. musculosus and A. nodimanus . Gnathopod 1 is subchelate in A. distinctus and A. musculosus (parachelate in A. charcoti and A. nodimanus ). There is little difference between A. distinctus and A. musculosus . The palm of gnathopod 1 is slightly convex in A. distinctus (straight in A. musculosus ) and the setal-teeth on maxilla 1 appear to be more slender, but this could be the angle of the illustration. In other respects they appear to be the same. Depth range. 2635–5173 m (Barnard & Ingram 1990, Jamieson et al . 2011). Distribution. Pacific Ocean: Near Palau (5°02'N 135°33’E) (Birstein & Vinogradov 1960); East Pacific vent region 13°N (Barnard & Ingram 1990); Loyalty Islands (Lowry & Stoddart 1994); Kermadec Trench (Jamieson et al . 2011). North Atlantic Ocean. Cape Verde Plain (Thurston 1990). : 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 8-9, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734 : {"references": ["Birstein, J. A. & Vinogradov, M. E. (1960) [Pelagic gammarids from the tropical Pacific Ocean]. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 34, 165 - 241. [in Russian]", "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", "Vinogradov, G. M. (1993) [Amphipods (Crustacea) from hydrothermal vents of the eastern Pacific.] Zoologichesky Zhurna, 72 (2), 40 - 53. [in Russian]", "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", "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", "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."]}