Pseudorchomene lophorachis D'Acoz & Havermans, 2012, sp. n.

• Main Authors: D'Acoz, Cedric D'Udekem, Havermans, Charlotte
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Pseudorchomene; Pseudorchomene lophorachis; Weddell Sea; Weddell; South Orkney Islands; Humps
• Online Access: https://zenodo.org/record/6176550; https://doi.org/10.5281/zenodo.6176550

Pseudorchomene lophorachis sp. n. (Figs 17–22) Type material. R/V “Polarstern” cruise ANT XXI– 2 (BENDEX), Eastern Weddell Sea, sta. 288 –1, 72° 47.58 ’S 19 ° 29.86 ’W, 847 m, Fish Trap, 31.xii. 2003 – 03.i. 2004: 1 HOLOTYPE [sex undetermined (sex detemination impossible without full dissection); no oostegites observed, 14.5 mm, right gnathopod 1 and left uropod 1 dissected but not mounted] stored in 96 % ethanol, RBINS, INV. 100954, Specimen (HOLOTYPE) Id with corresponding Gen- Bank Accession number: Pn–WS 847 (GU 109238) — R/V “Polarstern” cruise ANT XXI– 2 (BENDEX), Eastern Weddell Sea, sta. 288 –1, 72° 47.58 ’S 19 ° 29.86 ’W, 847 m, Fish Trap, 31.xii. 2003 – 03.i. 2004: 1 PARATYPE [sex undetermined (sex detemination impossible without full dissection); no oostegites observed, stored in 96 % ethanol, RBINS, INV. 10954. — R/V “Polarstern” cruise ANT–XXII/ 3 (ANDEEP III), South of South Orkney Islands, sta. 150 –7, 61° 48 ’S 47 ° 27 ’W, 1943 m, Agassiz trawl, 20.iii. 2005: 1 female PARATYPE, 18 mm, stored in 96 % ethanol., Specimen Id with corresponding GenBank accession number: Pn–0304072 (HM054054) [ZMH- 43141]. — R/V “Polarstern” cruise ANT–XXII/ 3 (ANDEEP III), South of South Orkney Islands, sta. 150 –7, 61° 48 ’S 47 ° 27 ’W, 1943 m, Agassiz trawl, 20.iii. 2005: 4 PARATYPES stored in 96 % ethanol and 1 PARATYPE dissected and mounted on 15 slides in Euparal [ZMH- 43142], 10 PARATYPES, Specimen Ids with corresponding GenBank accession numbers: Pn–0510077 (HM054055), Pn–SS 1943 (GU 109253) [ZMH- 43143]. Type locality. South of South Orkney Islands, 61 ° 48 ’S 47 ° 27 ’W, 1943 m. Etymology. Lophorachis is a noun in apposition formed by combining the Greek nouns λόφος, hill, and ραχɩς, backspine. The name refers to the low posterodorsal protuberances of the body segments. Diagnosis. Somites of pereon and pleosome with small posterior humps. Mandibular palp inserted well proximal to molar process. Molar process broad. Gnathopod 1: basis anterior margin convex, palm oblique, basis 3.5 x, ischium 9 x, merus 7 x, ...