Abyssorchomene distinctus (Birstein & M. Vinogradov 1960)
- Dataset
- A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae)
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Amphipoda
- family
- Uristidae
- genus
- Abyssorchomene
- species
- Abyssorchomene distinctus
discussion
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
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).
materials_examined
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 [SS 01 / 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.